Mattress Categories

Mattress Brands

Extras

Get The Best April 2024 Mattress Deals!
Unlock Today's Coupons

Lucid vs. Serta

Slumber Search is supported by readers. Some links on Slumber Search are referral links. If you use one of these and buy something, Slumber Search may make a small amount of money. More info.

Lucid

Lucid mattresses have been selling mattresses online for almost 10 years and they have a wide variety of gel memory foam, hybrid, and latex mattresses. By selling mattresses by differing thicknesses, they offer a wide variety of mattresses in different firmness ranges, while using the same materials in essence. While customers like the price of these mattresses, there are some who experienced issues with sagging and durability. Those that did the best reported using the mattresses for temporary solutions.

Serta

Serta offers foam and coil mattresses and are common at many mattress stores and big box retail locations. As a household name in the mattress industry, Serta has been in the mattress business for a long time. Their mattresses range from budget-friendly to higher in price and offer a variety of firmness options and cooling designs. While most customers find Serta's branded products to be initially comfortable, there are some concerns about durability for some sleepers.

Based on our aggregated reviews and our scoring method, we recommend Lucid in this match up!

See Our Full Review of Lucid

See Our Top Mattress Choices

Mattress Score

Overall Score:
Lucid: 7.3/10
Serta Perfect Sleeper: 7.2/10

Customer Satisfaction:
Lucid: 6.9/10
Serta Perfect Sleeper: 7.2/10

Price Value:
Lucid: 7.3/10
Serta Perfect Sleeper: 7.1/10

No Back Pain:
Lucid: 8.1/10
Serta Perfect Sleeper: 8.2/10

Price:
Lucid: $119-$699
Serta Perfect Sleeper: $349-$4599

Lucid:
Get Yours Now

Serta Perfect Sleeper:
Get Yours Now


Lucid's Owner Satisfaction

Customer reviews can be sometimes difficult to find and make sense of -- especially with some companies moderating reviews. These mattresses, sadly, don't get the highest reception from sleepers. There are still customers that are very satisfied, but many others who are not. Learn more details about the mattresses below.


Lucid's Supportiveness

In terms of lasting support, these mattresses have mixed reviews. Some have described them as supportive and report being comfortable, but others didn't feel great after a night's sleep. If you are larger than average, you should do some added research before purchasing.

Edge Support
Edge support is extremely important for those that want to sit on the side of their mattress without dipping down or becoming uncomfortable. Some may not find these mattresses to be evenly supportive along the sides and may dip more than usual.


Lucid's Durability

In addition to having good support, having a mattress that really lasts is key for shoppers. We all really want to find a bed that will be comfy a decade or more later. Unfortunately, not all sleepers have felt that these mattresses were durable enought for them. If you are thinking about buying and using full time, read through the customer reviews and return policies to make sure that you are secure in your purchase.

Serta's Owner Satisfaction

Understanding how customers feel about mattresses can be a great guiding force for shoppers. Sadly, customers don't always feel comfortable with these mattresses. Some feel cozy and comfortable, but others don't feel that way. If you are contemplating ordering, see below for more specifics that may be helpful.


Serta's Supportiveness

Support isn't exactly the same as firmness. Great support is when your mattress aligns the spine and leads to a better night sleep. Unfortunately, these mattresses aren't the best in terms of support. Most customers are comfortable with the support right after purchase, but some folks didn't feel like they were adequately supported over time.

Edge Support
For those that sit on the edge of their mattress in the morning, edge support is very important. For most folks, these mattresses do a good job with edge support at the beginning, but some found it didn't last as well as they would have hoped.


Serta's Durability

These mattresses may not provide the kind of durability that you'd hope. Some sleepers have had problems with feel and durability over a shorter than average time. If you are looking for something with lasting support and would consider yourself plus-sized, these mattresses may provide good comfort initially, but do some more research before buying.

Browse Lucid Customer Reviews

Fantastic delivery.
Fantastic delivery.....the mattress arrived in two days. We laid the mattress out on the platform for the bed and patiently waited the 48 hours for the mattress to expand. This 10'' mattress expanded to 9 1/4'' on one side and 9 5/8'' on the other side which, although is less than a 1/2'' differential, means that the mattress is not level. This also means that the mattress does not fill up its cover, which is intended for the full 10''. I scoured foam mattress websites and this mattress was advertised to be 'medium firm' and is the firmest mattress Lucid offers. Unfortunately, the mattress really isn't all that firm at all. It's a fine mattress if you don't mind the baggy cover and a spongy mattress.

We have a double mattress made by Dormia, which is firm and we like. We were trying to find that mattress again, but couldn't seem to find it. After reading all the product literature we could find, we thought this was the right mattress.

I'm trying to return it, but, of course, this mattress that expands after the box is opened will not fit in the box it arrived in. I'm having difficulty returning it because it needs to be returned in the box it came in.....

On the other hand.... I finally was able to return the mattress (which was no easy task packaging, etc, and we had to bundle it and wrap it in plastic) and Amazon was great and timely in issuing a refund.

Show More Reviews Show Less Reviews

MOST COMFORTABLE MATTRESS EVER
MOST COMFORTABLE MATTRESS EVER. If you are thinking about a foam mattress, buy this one. BUY IT NOW.

This is the second one I've bought. The first one had to be sold because I was moving and couldn't take it with me. Sleeping without it for a year and then getting a second one really proved how much more comfortable this is and how much better I sleep on it.

With both of them, there is a definite smell because it's foam and it comes vacuum-sealed and rolled in plastic. The smell will happen, it's just a fact. But in neither case did it linger or ever become so strong that I thought it was outrageous. In both cases I opened the mattress, let it expand, and slept on it that night without any smell issues. If you're pregnant or super-sensitive to smells, this might set you off, but after a day, I didn't notice a smell anymore at all.

The delivery is fast and it's really easy to just unroll it onto your bedframe and let it expand into its final shape. And moving it around once it is expanded is pretty simple too. It's not the lightest mattress but I don't find it any more heavy or cumbersome than a traditional spring mattress.

We're talking about having to upgrade to a queen or king size when we move again and I will absolutely be buying either of those sizes in a lucid memory foam.

This was a bad purchase. The bed just sinks into a hole ...
This was a bad purchase. The bed just sinks into a hole no matter how many times you flip it around. It destroyed my back. And the warranty (which says it's 25 years) wasn't true. I had contacted the company within 2 months pf purchasing the mattress and got no where with them.

Like waterbed - if you like that kind of thing
Couldn't sleep comfortably on this mattress. Instead of fitting to my body - it simply sank to my body. Perhaps its me, I need a firmer bed - if that's you - don't get this (1,000 years ago I owned waterbed - its something like that - maybe better when I was 20 - but not now in 40s).

I would not reccomend this brand after 5 years, we're shopping for a new one
if you remove the fitted zippered cover, there's tiny shards of what looks like fiberglass or something. It kind of scares me to think about it.

Would not buy this one again. So we just deal with it and bought a sealed waterproof cover for it hoping we never have to remove the cover again.

After 5 years, there is certainly 2 'dipping' spots on each side (We rotate the mattress 4x each year but you can only swap it 180 degrees and can't flip it). I find it very difficult to sleep in anywhere but the depression (it'll be like sleeping on a hill). I don't notice it if I lay directly in the exact center though. I think after 3 years I should have bought a different one (supposed to be warrantied for 20?)

A dumpster full of trash is a better quality bed...
I thought initially that having a bed shipped to the door of my new house instead of using my old one would save me a headache. It turns out I was wrong as this bed has broken down in less than 1.5 years of just me sleeping on it (I'm a 200lb athletic built man). I would expect more from a bed, but I should have known. Next time I'll choose a Costco bed as they have better warranties. The bed has broken down on both the right and left side. It fills almost as a mountain range separates me and the other side of the bed because the edge has sunk so much. I can not sleep on my stomach as the destroyed support hurts my back. This bed may as well be an airbed. Just because it has good reviews does not mean it is even nearly as good as a $500 bed.

Awesome bed - I've had it for more than a month now.
Make sure you air it out before using it, and use the proper base (you want a base specifically for memory foam beds). These beds can carry some heavy fumes if you don't air them out enough, so make sure if you're chemically sensitive to give your bed plenty of air-out time.

When I received mine (full-sized) I took it out of the plastic and let it air out for about a week before using it (this gives it time to "fluff" as well), then I covered it in a mattress protector (plastic) because I'm more sensitive to the smells. But the mattress feels WONDERFUL. I've not slept so well in ages. It was perfect for me, and took care of my back issues. But again, you may have to cover it well if you're extremely chemically sensitive.

Sloping Mattress
I purchased this mattress in October 2015 and the bed frame recommended for it as well. The bed was fine for 6-8 months and then began to sag on the sides and I am the only one sleeping on it. I basically have to hoist myself up to the middle of the bed so I don't feel like I'm going to roll off the bed. I've been having quite a bit of trouble sleeping lately and I think that it's because while I'm sleeping and turn over I feel like I'm going to fall off. The middle of the bed feels the same as when I first purchased it. I guess that you get what you paid for.

Great comfort & tremendous value, If it lasts for years!
I've shopped & procrastinated about buying either a memory foam type mattress or a "sleep number" type mattress for several years. After years of tossing & turning from side to side ( I'm a large framed [read ex-football player/coach] man) on our inner-spring bed, I finally decided to give this bed a try because of the price - $239.99, plus ~$80.00 s&h. for a queen size mattress. Should have done this a long, long time ago. I still roll over once or twice per night, but not on the nearly houly schedule I used to keep. We've only slept on it 2 nights. I'm not totally ache free in the a.m. but I'd have to say an 90% reduction in morning ache & back pain would be about right. If you're thinking about a memory foam mattress, don't keep putting it off. These inexpensive mattresses are great! Lucid mattress - $239.99, shipping - $81.80, good night's sleep - priceless!

Best mattress I've every owned
Hands down...this is THE best mattress I've ever owned. My sister has a genuine tempurpedic bed and it's basically the same thing. Although hers came with a box spring and this is JUST the mattress itself, mattress-wise, hard to tell the difference. This one is just a tad firmer than the bed she owns but I like firmer mattresses to begin with. I've never slept better in my life before getting this thing. I used to have trouble falling a sleep at night if I took a nap during the day, but this bed alleviates that issue. Also, I don't wake up with any weird pains anywhere on my body. I wish I would have known about this "steal" sooner...

Great quality for amazing price!
We have shopped, and shopped, and shopped for mattresses and I have never seen a deal this great even at the discount places or the places with defective mattresses. We bought this mattress for our little boy who is in a torso cast (to treat his scoliosis) to help him be more comfortable at night. I might also grab one for our guest room at this price.

6/20/11
Just wanted to update my review after using this mattress for the past 6 months. At first I was a little skeptical since it was firmer than the mattress I normally sleep on, but I LOVE it. I often fall asleep in my son's room (where this mattress is) and if he is gone for the night I sometimes sleep in his room instead on mine so I can sleep on this mattress.

New Mattress, New Me, New World
For the past four months, I've slept upon a large, granite slab. People called me grumpy, troll-like, "unpersonable" in interviews. Last night I fell asleep upon this cloud, like the backs of soft puppies; a thousand daisies cradled me like an infant. Sleep beckoned me like a warm, familiar friend, breathing life back into my tired soul. Today, I awoke as a new person, 99% certain I have discovered the cure for cancer, pollution, and old people smell just from a single night of glorious sleep upon this heaven-sent Lucid 10" Memory Foam Dual-Layered Mattress. What will tomorrow hold? Will I find a renewable energy source? Save an endangered species? Lead the way to world peace? All I know for sure is that my night will be filled with ecstatic slumber.

Note: If any of you have ever slept in a jail cell before, it's basically the opposite of that.

Memory foam rocks! Firm mattress.
This mattress came rolled up (compressed). It has a soft white cover which can be unzipped and washed, I think. It was heavy but I was able to lift it by myself and drag the box up a flight of stairs. I have never owned a memory foam mattress before so I was expecting it to be lighter. When I got it upstairs, I removed the packaging, and unrolled the mattress, which decompresses into its original form.

The mattress is as supportive as my regular mattress. I consider this one to be firm. I would recommend this mattress. There is an odor which is similar to latex paint, but it is fading. I have been sleeping on this mattress for a week and it I love it.

This is a GREAT mattress for the price!
I was not really sure what to expect when this mattress arrived. Thankfully it did not take long for us to know we made a good purchase! This mattress is firm yet soft and comfortable at the same time. We went ahead and bought two of them at this bargain of a price and both are very comfortable! Don't hesitate to grab one of these up. I switched out a $1,800 mattress for one of them I got and am so glad I did! If you are wanting a better mattress but don't want to pay an outrageous price, then I suggest one of these!

and although the size was too wide initially I was able to easily cut off a few inches using a kitchen knife ...
Absolute heaven! I bought this mattress for my Freightliner Cascadia, and although the size was too wide initially I was able to easily cut off a few inches using a kitchen knife to fit my sleeper perfectly. When I first laid down on this mattress I could not believe the difference from my previous mattress, it made my previous mattress feels like a bed of nails in comparison. This mattress sleeps just as good or even better then my $2,000 mattress at home. I had a 2 inch memory foam pad that I bought from Walmart to help my old mattress that I added to this mattress for overkill effect and now it feels as if I'm sleeping on a cloud. I'm 6 '3 260 pounds, this is just my opinion but I think this is a great mattress initially I'll have to see how it holds up down the road

This was a terrible item. Quality was lacking and became very...
This was a terrible item. Quality was lacking and became very, very uncomfortable after a short amount of time. The price may be low - but I do not recommend this item. Thumbs way down.

So good, we bought three!
This mattress is wonderful. I first purchased two queen-sized mattresses a couple of years ago for my kids. I was a little iffy about ordering them, but knew that with Amazon's return policies, it was worth checking them out. I had no idea how I'd ever get them back in the packaging if they turned out to be a disappointment, but I ordered them anyway. Fortunately, I never had to figure out re-vacuum seal a queen sized mattress back down into a small box, because these things are great!

They do have a sort of funny smell at first, but nothing horribly offensive. We just opened up the windows and let them air out as they inflated. The short-term smell was worth putting up with, in order to have such a comfy mattress, at such an affordable price. My kids were thrilled, and so excited to have a bigger bed. Especially my son, who is so tall that his feet no longer fit onto the twin bed we were replacing.

That was over 2 years ago, and the mattresses are just as good as the day they we unpacked them. There are no dips or uncomfortable areas, just wonderful, comfortable mattresses. This past autumn we set up a spare room for my in-laws, so they could come stay with us for a couple of weeks, and we knew we had to have another of these for their use. Again, we have had a wonderful experience, and are pleased with our purchase. My mom came over and reclined on it to try it out one day, and was shocked at how great it was for the money, and has determined to replace her own with one of these.

My mother and father-in-law were both surprised at how comfortable the mattress was, as they knew how much we'd spent on it. I'm sure they were a little worried about sleeping on it, and having sore backs for two weeks. Instead, they were both pleasantly surprised at how well they'd slept, which was just as well, if not better, as they did on their own brand-new $1500 pillow top mattress. I'll certainly never go back to a traditional mattress.

I'd recommend
So far my husband and I love this mattress. It is on the firmer side, yes, but it still fits to your body and is still comfortable. Otherwise you'd sink right through it. After having it for over a week it's definitely a lot more flexible so it will get better over time. If you want more of the memory foam "sinking into" feeling I'd suggest a memory foam mattress pad topper maybe 2-3in deep, but it's not necessary. I'll update this review if anything changes.

A great bed at a great price.
This bed is great. I think it was a total shipping weight of 67 lbs. Heavy, but not terrible for one person to carry. Used two people to take it up the stairs to make it easier to navigate. Quick set up, in the box is just the bed and some plastic wrap. I didn't think it needed to wait 24 hours to be used, but I still did anyways. Wow, this mattress is great. It isn't a 5 star mattress compared to $1000 mattresses, obviously. But for the price you pay, this thing is great. I am not sure how long it will last, I have only had it a month or so. But for the price, if it does only last a couple of years I will be happy with that.

I regret nothing about purchasing this. Prior to buying this I had a $600 spring mattress, this is far more comfortable. I really feel like a get a better night's sleep on this thing.

Good Matress for the money!
I must admit that I did not know what to expect when I ordered this mattress. I did know that similar mattresses like Tempur-Pedic sell for over $1,000.00. I also knew that my 10 year old innerspring Sealy mattress was killing me. I hurt every morning when I woke up.
I shopped everywhere; locally, as well as online, including E-Bay and Craig's List. The price was what caught my attention. It was $100.00 less than the best price I could find. That made me skeptical, because you get what you pay for. In looking at other memory foam mattresses online, it seemed that memory foam mattresses were a good item for scam artists..... if you have looked, you know what I mean.

What eased my skeptical mind with this particular mattress was the 20 year warranty. I saw NO other comparable warranty, so I purchased it.

Once again, when UPS delivered it, I had my doubts..... it came in a box. I began wishing I had not bought it, but carried it upstairs to my room, and opened the box, figuring that I had to put it together, or something. Turns out that it was just rolled up very tightly, and wrapped in plastic. We unwrapped it, and it started expanding quickly.

The first night sleeping on it was unbelievable! I slept like a bear in hibernation! But the best thing was that I was not hurting the next morning! I would recommend this mattress to anyone looking for a good deal on one. It really surprised me in more ways than one.

Very Good Value for the Price Paid
This is a very well manufactured mattress. The mattress will mold a shape to your body cavity and reshapes itself after you get up (memory foam). I did not experience any oder of the foam as stated in other reviews. The mattress went from 2.5 inches to 8 inches in about 8 hours and expended to the full 10 inches in 30 hours. I was able to donate the old mattress to our local furnature bank. I am well well satisfied on this purchase, it arrived in a few days from the initial order by Fed Ex.

firm but good
As other reviewers have stated, this is indeed a firm mattress. Being a fan of softer ones myself, it took a little adjusting. I still plan to invest in a mattress topper eventually for that little extra snuggle factor; however overall, for the price and convenience, you can't beat this mattress. If you need a bed fast, at a great price, just get this one. I would prefer a bed that's a little on the firm side than one that'll sink in the middle after a short time anyway. Also, if you're used to innersprings as I was, this might feel a little weird for you too (ie. it doesn't bounce- obviously- memory foam) so no jumping on the bed. Darn. But, as far as memory foam mattresses go, this is tops.

I will never sleep on anything else again
I have had this mattress for about 2 years now. I originally purchased as a temporary bed until I could afford something better, but I will never sleep on anything else again. This mattress surpassed my expectations. First impressions are that it might be too firm, but don't let it fool you. I wake up in the same position as I fell asleep and have NO aches or pains....ever. I was also concerned that over time the mattress might "break-in" or sag where I sleep - this hasn't happened. The bed still feels like the first day I bought it. If you think you'll get more for your money by spending $1,000+ on a name brand memory foam mattress, I challenge you to try this first. You won't be disappointed. The protective cover is also a nice touch. It is soft and velvety, not crunchy or cheap like some other protective covers. Over time if the fabric pills just flip it inside out and throw it in the wash.

comes in a vacuum roll and it is easy to move around compared to a traditional bed
This was my first real memory foam bed. This is firm very firm. Took me a while to get use to it. Not a bed meant for side sleepers as you do not sink into the bed. I am now using it as a guest bed. Smell goes away in a couple of days in a well ventilated room. comes in a vacuum roll and it is easy to move around compared to a traditional bed. Price cannot be beat here on amazon.

Set up quickly and is great to sleep on.
My daughter recently moved out taking her bed along for the ride. Unfortunately this left an empty spot and nowhere for guests to stay. We decided to size down to a Twin XL instead of her queen. (1) Because it takes up less space in my office and (2) Although we want them to be comfortable, we don't want them to be "too" comfortable (lol).

The LUCID 10 inch memory foam Twin XL mattress arrived in a rectangular box that was manageable even by myself. It weighed about 49 pounds, but I was able to get it up 2 flights flipping the box end over end. Once out of the box, it was double wrapped in plastic. You remove the first layer that will allow the mattress to roll out flat. The 2nd layer, once removed, allow the mattress to expand. One word of advice... the mattress rolls out upside down, so flip it before taking the plastic off. Although my Twin XL was easy to manipulate fully expanded, I can imagine the larger mattresses would not be (floppy and squishy).

Yes, the mattress smelled initially. We had it in an upper bedroom with the ceiling fan going on high. After about 24 hours the smell was gone and I could "dress" the mattress. I felt it inflated completely and laying on it I thought it was very comfortable. I am a squishy bed kind of girl and wondered if this more firm mattress would be a no go for me, but I could see sleeping on it. I wanted it a little firm as I set the bed up sideways to look more like a day bed (wanted people to be able to sit on it and not fall in).

Sleep test... my daughter came home for a visit. She is also a very squishy bed lover, so again I worried. Her first night she slept "eh, ok". Her second night was much better and she said that it was just a matter of getting used to memory foam compared to her spring mattress. Overall she liked it and would recommend it!

Glad I didn't waste my money on a Temper Pedic! I LOVE LOVE LOVE this mattress!!!! Twin XL 10"
Excellent quality. No horrible odor like some reports. HUGE FIRM COMFORTABLE MATTRESS! Better quality than the mattress selection at Sleepys. This mattress was a huge gamble for me and I am glad I did it. We are very pleased. I think I am a bed snob. I love to sleep and I love to sleep on comfortable beds. We spent over $2000.00 on a Stearns and Foster Mattress and personally, this LUCID by LinenSpa 10" mattress is better than any mattress I have ever slept on. My daughter is in heaven. I know where I am sleeping tonight. Can't wait to purchase the 12" king Sized for hubby and I.

Very good beds
These beds are very good beds, and represent some of the best value for the money in mattresses. The beds take a few days to reach full depth. We had bought these for ikea malm bed frames, because these mattresses are better quality than ikea's cheaper mattresses and full depth. The depth is important so it fits sheets without pulling off (important for kids beds where it is a challenge to get them to make the bed in the first place). Unfortunately ikea full frames are 53" wide and these mattresses are 54"+, even when fully expanded they still curve out in the middle. The difference prevents the mattresses from fitting down in the frame. I had to fabricate a 'box frame' out of 2x3's and the bed support slats to push the mattresses up almost flush with the top of the bed frame. Not a big deal since I enjoy my occasional home improvement projects...

The beds are definitely comfortable. I may consider getting one for ourselves in addition to the kids in the future. I could see if you were a sleeper that rolled a lot these would not work for you. When you sleep you create a depression that wants to re-center you when you try to rotate. Likely consistent across all foam type mattresses though. The kids have been super happy with the upgrade from traditional twin spring mattresses.

Would buy again, and have two of them already.

Best Mattress I've ever had - at an exceptional price!
Up until I purchased this mattress, I'd suffered from headaches, severe back aches, and general soreness every day - and I'm only 27! After sleeping on this mattress for only a few days, the difference was remarkable. No more back pain, little to no head aches, it was amazing! I wish they sold it in King size - I'd buy it on the spot to place in my other bedroom. Some reviews mentioned an odor, but I did not experience this, and the mattress swelled up just like it said it would when I pulled it out of the box. Absolutely worth the money, I'd suggest it to anyone.

Highly recommend- exceeded expectations
Great mattress. Bought the twin for a college apartment. The mattress came rolled in plastic inside a box- which fit easily into the back of my Honda pilot (with a bed frame and a dresser as well!). It's not super heavy- I lifted it with my daughter, but my son, who is 6'3", could carry it by himself (when in the box- outside of the box it's unwieldy, because it's big, and fluffed up). When we took off the plastic and unrolled the mattress, it quickly puffed up- and became 10 inches. Initially it looked about 3"- which is how they get it in a relatively small box. BE CAREFUL when unboxing it- there are lots of large silica gel packs in the box- a few of ours had broken and there were little pieces everywhere. We heard them sliding around, and opened the box outside (thank goodness). We didn't find much of a smell (we thought there would be, and were leaving it alone for a few weeks to air out) but I didn't notice much at all- so my daughter could have used it the same day. The mattress is thick, and very comfortable, and comes with a nice cover. It fit the twin frame we got on Amazon perfectly. I could not be happier with this purchase. Loved the packaging. Love the product.

THANK YOU for such an amazing BED!!!
I had recently purchased a "memory foam" bed from Amazon and had to return it because the bed had never fully risen to the height it was advertised at and the bed was just too darn uncomfortable. So you can imagine I was worried about my purchase of yet another item from Amazon. To my much needed surprise the bed is extremely easy to remove from the packaging and had risen to true size within 12 hours! The bed is so very comfortable and the extra long size is magical (I have a boyfirend that is 6'6") and his feet do not hang off anymore!! The price is very reasonable for the quality and it comes with a 25 year warranty... BUY THIS NOW!

besides that it comes with a nice 25 year warranty
i have been sleeping with a mattress and box spring for way to long, ive been wanting one of these since i first slept on one at my moms house. when i started to look up mattresses i decided to look at this one. one it is a 10 inch memory foam mattress. besides that it comes with a nice 25 year warranty. it comes delivered my fedex and it surprisingly comes in a fairly small box. the mattress arrives flat and rolled in plastic and inside of the box. when you remove it from the box it has to sit flat on the ground for 48 hours so it can become the size that it is supposed to be. i recommend doing that in the room that you are planning to use the mattress in because once it is at its original size it is a pain to move it. ive had it for a few months now and im in love with this mattress

The BEST MATTRESS I have EVER purchased!
LUCID 10 Inch Memory Foam Mattress - Dual-Layered - CertiPUR-US Certified - 25-Year Warranty - Queen
I was in need of a twin bed mattress, and needed it delivered quickly. I was super happy to find this great buy on Amazon, and with my Prime membership, I received it with free shipping in a few days to my door. Can't beat that! The mattress was tightly packaged in a box, and when In opened the mattress's plastic covering, it started expanding almost immediately. Within 2 hours, it had expanded to the full 10 inch depth, and was ready to sleep on. I did not notice any chemical odor that some other reviewers noticed. The only thin g I would change is that the little bag of dehumidifier's(?) had broken, so when I took out the mattress from the box, they spilled all over my wood floor. Since they are clear, it has taken me almost a month to find them all, and I am still finding 1-2 daily. But, that is a small price to pay fore this great mattress! I was happy to experience great sleep from the very first night on this mattress. I'll definitely purchase another one if my bedding needs change again.

Fluffy Clouds
This mattress gives the most AMAZING night of sleep! I had a memory foam mattress years ago and I was so sad when I got rid of it. BUT when I bought this one OHHH MYYY GOD! It is like I am sleeping on a fluffy cloud EVERY NIGHT! Nothing is better than a good nights sleep and at this price you can afford one for everyone in the house. I know I definitely feel spoiled every night that I get to sleep on my mattress.

GREAT Mattress!
I was shopping for a new mattress for months, because my old one was causing noticeable back pain and some twinges/cramping. I'm notoriously cheap and a determined bargain-hunter, but even I was a bit skeptical about a king-sized memory foam mattress for such a low price compared to the competitors. However, I've been sleeping on this bed for 3 weeks now, and I can honestly say that I did not sacrifice quality or comfort at all. I would have given it 5 stars, but (as other reviews have stated) this should not be described as a firm mattress. I didn't want a firm mattress though, so it's perfect for me. The best part? Not a bit of back pain or even a single twinge since I received this bed!

UPDATE: I've been sleeping on this bed for over 18 months now, and it's held up perfectly- no loss of firmness, shape, anything, it's still 100% as good as the day I got it. I love it. It's the best money I have EVER spent. Don't waste your money on a more expensive one! I've sent a few friends links to the listing and they've bought it too

Affordable memory foam mattress that feels expensive
I purchased this to replace a spring mattress that came with abedframe that I got on craigslist. It was new, but definitely not luxury. After a year or so, I decided to start shopping around for something that would be comfortable, yet affordable.
After browsing Amazon (my favorite place to start), I came across this highly-rated mattress and, based on the reviews and the price, decided to give it a go.
With prime, I got the mattress a few days after I ordered it. I popped it out of the box and let it expand in the living room for 48 hours (as indicated). I think it was fully expanded after 24, but I let it go the whole time just to be sure. It comes in a box, wrapped in plastic inside, and has a removable mattress cover that is very thin (but does the job and is easy to remove and clean).
I didn't think to remove the plastic covering while it was expanding, and when I finally went to put it on my bed, got hit with a smell akin to paint when I tore open the plastic. It was very strong and gave me a headache just like I get when I'm around fresh paint (like when I repainted the walls of my house). I left it on the bed with the window open and fan on, and after a day the strong smell was gone (totally gone after 48 hours... should have done this while I was waiting for it to expand).
After the smell was gone, I added my sheets (they fit perfectly, which matters a lot to me since I hate when they slide off the corners) and blankets and climbed in... HEAVEN! Like a cloud that you're not afraid will dissipate and drop you to earth. As I lay there, I felt my aches slowly leave my body, and pretty soon I was waking up. I NEVER fall asleep that easily! This is definitely a winner in my book.
I'll check back in after a while and add an update.

Great deal , done with mattress, box springs!
Great deal, firmer than I expected. Not a problem. 25 yr. warranty. No more mattress and box spring sets. We replaced a king with a king and used the memory foam topper we had to soften it a little. Well pleased with Lucid customer service I talked to prior to purchase.

loooooove it
everybody who knows about our bed is jealous for what a good price we got it. and it feels great

So far so great!
I did a plethora of research before purchasing this product. My wife and I had been sleeping on a spring mattress for 5 years that was starting to sink to the middle, so we decided to purchase a new bed for ourselves for Christmas. I didn't really know which way we should go, but I knew my parents had a Temperpedic and love it, so I figured we should try memory foam. The only problem is I am 27 and cannot quite yet afford a mattress of that stature at this point in my life. I came across Lucid on Amazon early in my searches and it caught my eye right away. We have been sleeping on it for a month, and it has been the greatest investment we ever made. For the whole king bed (mattress, frame, sheets, skirt) we spent less than $500 and it has been worth 3X that much! I will touch on a couple points that I read in reviews and give my thoughts:

Several reviews spoke of back pain early into their experience with this bed that subsided. In one review the guy mentioned that it felt like a "good pain". I wasn't quite sure what that meant until I slept on the bed. I too had minor aching in my lower back the first couple weeks after sleeping on this mattress, but for some reason it did feel like a "good ache". I still slept sound and felt comfortable when lying in the bed, but woke up aching. Now, after a couple weeks, I wake up pain free and completely refreshed. It is like sleeping on a cloud.

Another major point in reviews is the stiffness of the bed. I weigh 165. My wife about 110-120. My weight allows for me to make impressions in the bed, which to me makes the bed feel softer than most reviews are giving credit for. The bed completely swallows me up and I feel like I am cradled in a little cocoon almost. My wife on the other hand is not heavy enough to force impressions in the bed. This is not to say that she doesn't think the bed is a completely heavenly sleeping experience, but what I am getting at is that lighter people will feel like the bed is a little stiff, but not too stiff and still extremely comfortable.

Last but not least that I read in a lot of reviews is the smell. The best certainly smells when opening. It isn't extremely pungent and didn't bother me a lot, but it is there, and definitely needs to air out. The recommendations with our mattress was to let it air out for 48 hours before sleeping on it. We being extremely excited to sleep in a new be only allowed a little over 24 hours of airing out time in a pretty poorly ventilated room as it is winter time and cold outside. This was probably a mistake as now our cover that goes over the mattress has a slight smell of the bed even after washing which causes our sheets to stink slightly as well. Nothing major, but you do notice it. Nothing to deter me from recommending purchasing this product.

SHOCKED at the comfort!
We bought this mattress for our guest room. We just wanted an inexpensive, fairly comfortable mattress. FAIRLY comfortable was the goal - we don't want our guests to wear out their welcome! LOL .. We had the mattress for three weeks and our son was the only one that had slept on it. He said it was very comfortable. Last week my husband hurt his back and decided to sleep in the guest room because he said the mattress seemed to have more support than our Tempur-pedic. He felt much better after a couple of nights on this mattress. He did return to our Tempur-pedic but two nights ago asked if we could sleep in the guest room. Well, we have been there since! I think we are going to change mattresses and put the Tempur-pedic in the guest room. I can't believe this less than $300.00 mattress is replacing our $1500.00 Tempur-pedic of two years. Go figure! I think this is definitely one of the best buys on Amazon!

FYI, this mattress is delivered rolled up quite small. We unrolled it and let it air out and fluff up a day or two before putting the bedding on it. The smell dissipated within two days.

Glad we bought this one
The mattress came compressed to make it easier to handle. Personally I was really glad it did. I did not notice any smell at all. It was firm and had us worried at first but after sleeping on it we have been loving it since day one. I wake up in the same spot I fell asleep in and feel totally rested. I can't see why anyone would pay more. I know the old saying "you get what you pay for" but I also know that it is not always true if you are informed. Sometimes you just get taken. My brother has one of those way expensive well known brands and neither one of us or our wives can tell the difference. They both wish they would have known about this one first. And both mattresses have a 20 year warranty. I would not hesitate to purchase this brand again.

Browse Serta Customer Reviews

Really nice when warm. Hard as a brick when cold.
Have a cabin where the bed room temp is around 60 in the winter. The upper 3 inches of gel memory foam is really ridgid when cold. Climb into a cold bed is more like climbing onto a piece of plywood. After about 10 minutes, your body temp softens the foam and it is really comfortable... until you roll over too far onto a cold slab and you are back on the plywood.

I sure hope summer is more comfy.

Show More Reviews Show Less Reviews

The Best Mattress!
This is a great mattress! My husband and I moved to our new house and bought this mattress for our room. The first bed that came did not open up all the way and was basically a taco. We called Amazon and they sent a replacement. We have been sleeping on this bed for about 3 months now and we can feel the difference from the traditional mattress we had prior. Our sleep is a lot better, we no longer feel sore, and we don't notice each other's movement during the night. Definitely get this mattress!

Firm enough for a big man like me!
I weigh a lot in comparison to other people so I was initially hesitant to buy a memory foam mattress as I feared sinking to the bottom or drowning. This mattress not only held my weight stiffly but it is super comfortable and probably the best mattress I have ever used. I bought the double and it worked so well that when I bought a king bedroom set I decided to buy the bigger exact same mattress in king size. It come in a big box compressed so you will want to get it upstairs on the bedframe before you open it up and let it absorb all the air around.

Great Buy!
I was uncertain about purchasing a mattress on-line, but the price was so much below what I found in stores that I went ahead and made the purchase. I'm glad I did. The shipping was easy, the mattress quickly expanded once in place. I did not notice any odor. I'm sleeping much better through the night and wake with less back/hip pain. This mattress is a great buy, especially for the price!

Amazing
My wife and I were looking to upgrade our bed to a king during a recent move. We looked at all the big named stores for furniture / mattress and were taken back by the price of the memory foam mattress. We tried out the I-comfort mattress Raymour and Flanagan's and really liked it. After spending hours researching this mattress, I came to the conclusion that this is similar to the Serta I-comfort and about 1/4 - 1/3 of the price. This bed is exactly as advertised and feels identical the the I-comfort we tried in the store. We could not be happier and it sleeps so much better than a traditional spring mattress. I would recommend to anyone.

Remember, you also need a box spring or foundation. This will add another $200 - $400 for the total cost of the bed.

A most fantastic mattress
Our new mattress is comfortable beyond words and so much lighter than the Tempurapedic we had before for many years. It feels like a heavenly cloud and we have slept so well on it and could not be more pleased with our purchase. The price of it is unbelievably low, I recall we paid $2,000.00 for our old mattress over 15 years ago.

Maria & Ted Phillips

I snore less.
One of the best beds I have slept on. I usually sleep HOT and was leary of trying the memory foam bed, but i was amazed at how cool it sleeps. My wife has also said that I do not snore as much.
I could not give the bed a 5 for one reason. I like to sit on the edge of the bed and put on my shoes, but this bed does not have the support on the edges to do that.

Hard, hot, and bumpy
I've had this mattress for 3 weeks now and I am not happy. It is very firm for a memory foam mattress (maybe it will soften up over time), so firm that my body doesn't sink far enough to fill in the lumbar space of my back. I wake up sore every morning, and it reminds me of sleeping on the ground (I camp a lot, so I know). It was shipped in a shrink wrapped container, folded in half, so there is still a noticeable ridge down the center of the bed that divides the two halves. Also, even after airing it out for a week, it does still have a noticeable plastic smell. Lastly, it does trap a heat a little bit.

Overall, I am really unsatisfied, and am contemplating returning it.

Very good mattress
I have had this mattress for a year. The mattress is very good. I read a ton of reviews before purchasing this mattress. A lot of mixed reviews when I researched this mattress. I could not see spending 1500 to 3000 dollars for a similar mattress. I was a little skeptical because this mattress was so cheap. Amazon Prime was a factor in purchasing this mattress. The mattress is very good. No issues with smell or sagging. I am very happy

Hard as a rock
Wow, what a disappointment. Sure wish I'd listened to the reviews that said this mattress was HARD. It's not just firm, it's like sleeping on a stone slab. I can't imagine the hassle to pack it up to return it, so after a week of suffering, we bought a 4-inch memory foam topper, which has helped tremendously. However, as soon as we can afford it, we're buying a real memory foam mattress.

Way to firm for Foam!!
If I had it to do all over again I wouldn't have bought this. It needs to be listed as an Firm mattress. Since I have it, I tolerate it. I went out and bought a 1inch foam topper to put on it to reduce the firmness. What I do find is as you sleep on it and it warms up it gets softer. So I bought a heated mattress pad and put it on also. About an hour before bed time I turn it on low and it does soften the mattress somewhat. Over all I would never recommend this mattress nor would I by it if I knew what I know about it now.

Great Sleep
We were a little worried to buy the bed online, but took the plunge. We were pleasantly surprise at how quick it was delivered. The queen size bed was heavy, but being boxed up made it easier to move. Once in the bed room, we unpacked it and let it return to its original shape. About two hours. The bed sleeps great. My wife and I both enjoy the fact that it adjust to our size. It does not wiggle when I get out of bed at night. I was expecting to sleep hot, but the cool gel works. Great purchase and great value. We priced similar beds at retail stores and they cost $1200. Very happy.

I love this mattress
I bought this mattress almost 2 years ago and I still love it.

That being said, I must disclose that I am somewhat cold-natured, so I don't mind that it retains heat, as the new memory foam mattresses do. This is the only reason this mattress gets 4 stars instead of 5.

When I purchased this mattress, I had done quite a bit of research on prices and quality of memory foam mattresses, and found this one to be one of the most economic choices for the quality. I am happy that I chose this one.

It arrived in a big square box. WARNING: Do NOT open the box until after you drag it upstairs and into the room where you want to use it. Opening the box in another room will create a lot of unnecessary work for you.

The instructions said it would take about 24 hours to completely assume its proper shape and size. In reality, it was ready just a few hours later.

My husband complained that it was not as soft as he liked, so we bought a memory foam/gel mattress cover for it at Costco. This helped make it softer and provided some relief for my husband from the heat retention.

If I had to buy another mattress, I would buy this one again.

Smart buy
The full size mattress is really comfortable. Bigger then a normal full size mattress. We had to replace the old boxspring to a sleep master smart base because of the size if the new Serta. Now we have more room under the bed for storage as well.

Great for sleeping, but quality a bit poor.
I was already to give this a 5 star rating. We bought it in june for our summer place. We have a temperpedic and home and never sleep well with out it. We could not justify the cost to buy one for the summer place. When we found this we were excited! The negative reviews sounded like the negative reviews for temper pedic, so we were not too worried. The box made it really easy to transport ourselves to our place. It opened and inflated great! We had all the windows open and fans going, but we never really noticed an odor. We even slept on it the first night!. It was close to the temper pedic sleep wise. Not quite as cloud like, a little harder, but it worked for us!

This weekend, I took off the waterproof cover that we purchased to wash it with the sheets. I found 4 places on the mattress where the seams were split and you could see the foam inside. Very dissapointing! We expected a little more from a Serta!

Love this mattress
Excellent mattress through and throughout..Amazon was super quick and mattress was in perfect shape..As I sleep on this mattress 2 yrs later all I can say is I sleep like a baby..It feels like you're sleeping on a cloud ..I wake up refreshed from a great night sleep day in and day out..

I'm lovin' it!
Researched loads of beds in my desperate attempt to get a good nights sleep and deep six the pillow top that was aggravating my already ailing lower back...........decided on the Serta icomfort since many people commented on how hot the memory foam gets.....and tried it out at my local store where they were upwards of $1600 depending on the depth. Arrived promptly, NO SMELL, easy set up and was sleeping in it that night....however my husbands initial comment before he had slept on it, was that it was like a slab of concrete.......... but once you're in it this is not the case... It is firm, yet neither too firm nor too soft and extremely comfortable altho it did take me 3-4 nights to get used to it having been sleeping on a pillow top, and I did find I had to adjust my mediflow pillow somewhat so it was flatter and lower...........the only down side I can see, is that both myself and my husband have been lingering in bed much later than normal, I used to be up at the crack of dawn since my back would be complaining and I needed to get up, but its oh so comfortable, and I'm loathe to get up when its so very snuggly and cosy....I'm sleeping much better with less tossing and turning due to pressure points.... if you're considering one, I'd say go for it, we both love it and were not dissapointed in any way!
**UPDATE** Oct. 2014 No sagging....best bed EVER!

Serta 12-Inch Gel Foam 3-Layer King Mattress
We received this mattress packed in its box and we took it to the bed and unboxed it accordingly to the instructions. Here is a short video of the process. [...] We then waited only a few hours, made the bed, and slept that night on it. Its been great this first week! Highly recommended and I will write another review after a few more weeks along with an updated video of it. It was awesome to see it take its shape! Thanks

Intelwalk

Great mattress. Unbeatable price.
Bought this mattress after trying out several different foam beds at various stores. Macy's had the Serta line of beds and I liked them much more than the others that were there. So I was very pleased to find the mattress on here.

I bought the full sized bed and it came in a box that's roughly 4' by 2' by 2'. The factory folds the mattress several times and then compresses it in a plastic wrapper. I put it on my existing box spring and opened it up and left it sit for about 6 hours for it to reach its full shape.

There was a slight smell to it but nothing unpleasant and by the time I put the mattress pad and sheets on it, I was sleeping on it the first night without any issue.

If this is your first foam bed it will take a few nights to a week to fully acclimate to the difference between this and a spring based bed, so dont give up on it too quickly.

I sleep on my back and side a lot and used to have horrible shoulder and hip pain from a conventional mattress and the pressure points. I am pleased to say this is entirely gone with this mattress.

I normally like a very soft squishy mattress and when you first sit or lay on this bed (especially if it's a bit cold) it's very firm. I laid on it and thought, "this will never work". Then it begins to conform to your body and supports you so well, you'll understand why so many people are switching to this type of bed.

With any foam bed, they hold a little more heat than a normal mattress. I havent had an issue with this one other than during the colder months I had to turn my electric blanket down than where it's normally set and I am fine. I would HIGHLY recommend this bed and at this price you just cant beat it.

Best mattress I have owned
I have had this mattress for over 3 years now and it is just like new. Would highly recommend if you are looking for a quality memory foam mattress at a great price. I have back problems and this has been wonderful.

This is a great mattress!
I was very skeptical when I ordered the product, and when the mattress was delivered in a 3 ft box and I pulled out the mattress folded over and shrink wrapped, I became even more anxious. When you first open the mattress and flatten it out, it will be hard as a rock. This is only because the gel becomes cold and needs time to reach room temperature. I let my mattress straighten out for around 5 hours, and by that time the mattress was completely flat and much softer. I wish the mattress was a little firmer, but all in all I am very happy with my purchase. The mattress is extremely comfortable and I love that the mattress retains my body heat, especially during the winter. If you're looking for a comfortable mattress at an affordable price, I highly recommend this mattress.

So far so good
You have to let this bed have a break in period. It was shipped in a little box and expanded very quickly. My husband built a platform out of wood for the bed. The product only had a smell for the first night or two but nothing like some of the reviews had mentioned. Now it did have a high spot for the first two weeks but after it began to break in things got better. I waited to review this poduct because I heard that these type of beds need to be broken in before you can have a real good nights sleep. We are both sleeping better. I love it even more because my husband wakes up earlier than me and I never ever feel him moving or getting up before me. I love that part. This was a good buy. I didn't give it a five becuse I am a hard grader.

Just Right
I ordered this bed in the offset chance that it would be comparable to the beds in the big chains (i.e. Macy's, Sears, Etc.). I was pleasantly surprised when it arrive on schedule and was set up and ready in minutes. There was no smell that a lot of other customers spoke of. It did have a slight crease for the first few days. However it has fallen and I assumed it was due to packing. I've only spent two nights on it as I'm not moved in yet, but it made for a comfortable sleep. Especially with my girlfriend. Having my arm under her pillow didn't come accompanied with the "dead arm" that happens on most mattresses. All in all it was a good experience and saved a new home owner a lot of money. Thanks!!

Just like the more expensive mattresses
We went to a department store to try out memory foam mattresses and got sticker shoch at the prices. We came home found this Serta on Amazon we ordered it right away. When it arrived we were very surprised to find that it feels like a nuch more expensive mattress. We are very happy with purchase of this mattress. Thanks so very much.

I am in love with my new mattress
I am in love with my new mattress. It's a whole lot firmer than my old one, but a whole lot more comfortable. I had the luxury of testing it at my parent's home first. I have already recommended it several times.

I like it, wife hates it
I purchased this mattress 6 months ago after trying out the Gel mattress in a local store. This mattress doesn't seem as soft as the one in the store. My wife liked it at first, but after a few weeks changed her mind. She now says it is the hardest mattress she has ever slept on, but she seems to sleep well. I have back problems, and I do think the mattress is hard but I also think it helps my back. The gel does help keep you cool, but the foam mattress does hold some heat.

Amazing mattress!
Greatest mattress I've ever slept on. I am about 205 lb and it hasn't had the denting problem other foam mattress suffer from even after a year of use. The gel also helps to keep it nice and cool during the summer months.

Also, there was no noticible smell when I opened it.

Love it!
I had read a lot of reviews before purchasing this mattress and I am so glad I did. It does take two people to set this mattress up, but easy to place, remove the package, and let it sit to expand. There was a slight odor of chemical, but it wasn't that bad. I opened the sliding door to let natural air in and seemed to be kind of gone by the evening. The bed was comfortable, firm, and felt very relaxed as soon as I laid in it. This was definitely a good purchase for the price!

For a great night's sleep.
This mattress is very comfortable - no pain from pressure points. It is quite firm but we use a fluffy mattress pad which makes it just right for us. The mattress is barely a month old but so far, we love it.

Amazon told me to wait and now i can't return this item.....NICE!!!!!!!
I purchased this bed and the first one came to me falling apart... The replacement one seemed to be ok... we set up the bed and it seemed to take it shape over the next 24 to 48 hours... it had a very high spot in the center on the fold that they put in it to box this item.... the high spot never went away... i spoke with a amazon rep. and the said that it should relax and lay flat... it has been almost a year am I'm still waiting for it to lay flat...i have to lay in the middle of the bed to cuddle with the wife!!! this don't make me happy... so it looks like I have to spend more money and get a new one...i just spoke with a Amazon rep. and he told me that the return window was only a few weeks from purchase... so i waited as asked and now i can't return this item...I to me seems like i was told to wait so that they didn't have to return this item!!!!! Amazon is usually good with things like this but per there request that i wait i loose out??? this just don't seem right in my eyes... i guess I'm out the 581.94 that i paid... YOU HAVE BEEN WARNED DON'T BUY!!!!!!

Gimmick product, period
I bought this in hopes of finally getting good night's sleep on a comfortable mattress. That didn't/hasn't happened. Hands down the dumbest purchased I've made off Amazon ever. This thing is HORRIBLE.
Main complaints:
*Stiff as a board.. No matter the temperature (they claim your body temperature will fix it as it heats up)
*Stinks of chemicals. Not sure what its made out of but WOW! Smells like I'm sleeping in an open can of paint.
*I weigh around 190lbs and I don't even make a dent in this thing. I don't sink in and it sure doesn't "form" around me.

Talking to a retail seller of these he told me more foam mattresses are returned than kept. The floor models are beat down versions of the real things so people can't feel the stiffness.

Gimmick product, period

Good company bad product.
This company is good but the mattress sucks. The first one we got we thought there was a defect because where we sleep there are large indentions but since they replace the mattress the same thing is happening .

If you buy this, don't plan on staying out of it for long.
If you buy this, don't plan on staying out of it for long. This mattress is so deliciously cozy that after the first night, I ordered one for my daughter as a birthday gift. No more legs cramps, neck pain from sleeping in the wrong position and the mattress doesn't heat up like the regular memory foam beds. SOOOO nice!

SERTA DOES NOT MAKE THIS MATTRESS. WARRANTY IS THROUGH OTHER MANUFACTURER. READ ISSUES BELOW
We purchased on 10/30/2011 and keep a protective mattress pad/cover and deep pocket fitted sheet on at all times. We paid $583 for a queen back them. We have just reported issues to Serta, who told us Sleep Innovations makes the mattress for them. Sleep Innovations are now Innocor Comfort out of New Jersey. We have to deal with them and not Serta. Wish I would of known that back then. The issues we are having is that the Gel Foam has shrunk 1.5 inches on the foot of the mattress and 1 inch on the one side, across the entire width and length of the mattress. In addition, the seams are coming apart and separating on the top of the mattress cover. Innocor emailed me a form to fill out and I have to send them a copy of the Amazon receipt and photos of the issues. We will see how the warranty comes into play and if they make good on a replacement or refund. Will keep everyone updated.

Not Bad for a Serta-ish Mattress
We had a spring mattress that was causing back problems, went to 100 stores and looked at the memory foam options, then decided to buy this one because it was less than half the price. The one caveat is - the mattress says it's Serta but it's not really. It's made by Sleep Innovations (who is not Serta). We talked to support about it when all the docs showed up in a Serta envelope but were labeled as Sleep Innovations and they seemed confused about it as well. Then we called Serta to ask about it and they said they sold the rights to Sleep Innovations to make the mattress and use their logo to help sell it. All very confusing and more complex than it needs to be - but at the end of the day, we like the mattress so far and it wasn't outrageously expensive. Now onto the actual mattress...

It's definitely pretty firm. I think we've had it long enough now that it's officially "broken in". We did add a topper to it to make it more comfortable. If you have a low bed platform, you'll probably want to buy a solid riser (unless you like doing an ab workout to get in an out of bed). So far, I'd say worth the money. Will come back and re-update in a few months.

4 years later and it's still wonderful
I waited to write a review ... and then I forgot about it. I bought the mattress in 2012 and today in 2016 it doesn't have dips or depressions where we sleep and is wonderfully comfortable. There are two things to consider about foam mattresses and it's a little confusing. 1) FIRMNESS - This is is ability of the mattress to support you body without sagging or forming depressions. This has to do with the density of the foam. That's why some reviewers talk about how heavy this mattress is - it's because it's so firm - and that's a good thing. It's why 4 years later the foam is still in good shape. 2) SOFTNESS - This is the Pillow Effect on the top of mattress that gives you comfort. This mattress is very Firm but not Soft on top. And that makes it feel a little "rock like" to some. If you like a lightly pillowed top I HIGHLY recommend a 2.5 inch gel mattress topper. (The one Costco sells is perfect). I know it seems like the whole mattress is now more expensive but too many other less expensive mattresses sag (are not firm enough) to hold up over the years, and that's false economy. Also trying to dispose of a heavy foam mattress is not fun. My husband and I think this mattress is wonderful.

Firm. Supportive. Not Plush.
We have been sleeping on foam mattresses for a long time and will never go back to springs. This mattress in particular has excellent support characteristics but if you are looking for a "plush" feel, you will need a topper. This is a firm mattress which supports the body. It is not a mattress you sink into like a cloud. Some will equate that firmness with being an uncomfortable mattress but really it is just for people who prefer firmness to plushness. Before you buy this one online, you should go to your local mattress store and ask to try their most firm mattress. You must lay on a foam mattress for more than a few seconds to give it time to adjust to your body. If the firm feels right, this will suit your needs. If you need plushness, keep shopping.

On a side note, another advantage to a foam mattress of this thickness is that you do not need a box spring. Whatever you put this on will be fine for a bed which means you can make a pretty cool artistic platform beds, or set it on a board or cinder blocks or whatever and as long as there is a flat surface directly under the mattress, the feel will be the same as if you used expensive box springs.

not for us
This gel foam mattress was really hard for me. I was 9 months pregnant when we got this mattress and I thought it would be good because it can help me get a good nigh rest by having a good support. Nope. I was wrong. It felt like I was sleeping on the floor. Every time I move it hurts. Plus it wasn't comfortable because it was hot. Don't know why since it's suppose to have a gel foam but I guess that doesn't work for me. If you prefer plush mattresses, this is not for you.

Comfortable
I've purchase memory foam toppers in the past and wound up very unhappy with them. I would sink in too much and wake up throughout the night just to turn over. I've had no problems with this and now realize there is a HUGE difference between toppers and a real memory foam mattress.

First off, this thing weighs a lot, nearly 100 lbs. If you don't have a strong man to help you with this, you will have trouble. UPS had to help me in the door with it on a dolly. It arrives in a box, contorted and airtight sealed. Unpacking was a two man job and we unpacked it right on the frame.

This mattress does not sink much when you lay on it and reminds me very much of quality mattresses of years past (prior to pillowtop.) No achy back from this mattress! The hardest thing we had was finding a proper platform for it. Wound up going with the Structures by Malouf HIGHRISE Folding Metal Bed Frame 14" High Bi-Fold Platform Bed Base, KING and didn't even need plywood or anything. We put the mattress straight onto it and this was an affordable option over a platform.

I will need a new twin mattress soon and I will definitely be getting one of these mattresses for that bed.

****UPDATE: Aug 14, 2012****
I now own two of these. After having owned the first one for quite a while, I felt the need to come back and clarify something.
Foam mattresses and toppers are hot to sleep on. I thought everyone knew this, but since they don't, I needed to let them know. If you are prone to being cold, you will like this mattress. If you are prone to being hot, you will hate this mattress and definitely wake up sweating.

GREAT MATTRESS
COULDN'T BE HAPPIER. I AM A SENIOR WITH SEVERAL ORTHOPEDIC ISSUES. BECAUSE OF PAIN IN MY HIP I WAS HAVING TO SLEEP ON THE COUCH, WHERE THE DEPRESSIONS BETWEEN SEAT CUSHIONS FIT MY CURVES. NOW I CAN SLEEP IN BED AND MY HIP DOES NOT HURT. I HAVN'T BEEN ABLE TO SAY THAT FOR 2 YEARS. SHOULDER PAIN ON THE SAME SIDE DID NOT RESPOND AS WELL BUT IT IS ALSO IMPROVED. SINCE I AM MENOPAUSAL, HEAT WAVES -NOT FLASHES- KEPT ME FROM TRYING THE ORIGINAL TEMPERPEDIC TYPE MATTRESSES, BUT THIS SERTA GEL FOAM MATTRESS DOES NOT TRAP THE HEAT, JUST LIKE THEY SAID. SINCE THERE WAS SOME DISCUSSION ABOUT SMELL, (AND A SERTA PILLOW I PURCHASED DID HAVE A STRONG ODOR FOR A FEW DAYS) I CHOSE TO OPEN THE MATTRESS IN ANOTHER ROOM. THIS WAS NOT NECESSARY, ODOR WAS VERY LOW. I HAD LAID IT ON A SHEET AND WE WERE ABLE TO MOVE IT EASILY TO THE OTHER ROOM. GREAT PRODUCT!!