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Novaform mattresses are famous for being sold in Costco warehouse locations. Being owned by Innocor, a memory foam developer and manufacturer, Novaform exclusively sells memory foam beds, with specialized foam blends and layering. Their collections range from Serafina, Comfort Grande Plus, Advanced Back Support, and SoFresh. With multiple firmness options, the big differences between their beds are the blends of foam and order of which they are placed for comfort. With slimmer and firmer options to thicker more pressure relieving varieties, their mattresses get good initial feedback from customers overall. However, there were some reported issues with heat retention and initial comfort in some cases. Read on to learn if one of these mattresses will work for you!
Purasleep is no longer selling mattresses. Purasleep is an affordable online mattress company popular on Amazon for selling memory foam mattresses. Their foams are CertiPUR-US certified not to offgas and they offer different firmness options for various budgets. Most customers find their mattresses comfortable, but some had issues with durability.
Based on our aggregated reviews and our scoring method, we recommend Purasleep in this match up!
Some sleepers are content with their beds, but others are not as pleased overall. Despite those that had a good experience, overall these mattresses have lower than average satisfaction from customers. Research on below for more specifics on whether this mattress will work for you.
Some customers report that these mattresses are well supported, but some others have been dissatisfied. For those that are of larger body types or require more support for health reasons, do some added research to ensure the mattress fits your body.
There are mixed feelings about edge support for these mattresses. Some find these mattresses to have even support, but others had issues with lumpiness.
Mattresses that last a long a time are great, but not always easy to find. Sadly, customers are not always pleased with the durability of these mattresses. This means that some folks may experience that their mattress lasts a decade, while other sleepers may find their mattress falters quickly. If you are a bigger person, take some time reading more before buying.
Some are very happy with these mattresses., but others have not been as excited about the mattress. Sleepers were mostly positive, but there were some negatives that they described. Get more information below on how these mattresses work for others.
For stomach and back sleepers, a supportive mattress is essential. Side sleepers also need deeper support and a responsive mattress for their hips and shoulders. These mattresses offer a good amount of support, above average overall. However, some have had reported some issues so if you are heavier than most, make sure to do extra research.
Most find these mattresses to provide good edge support. Those that are heavier may find some dipping close to the edges.
Mattresses that are durable will stay cozy at least 7 - 12 years based on the materials. Generally speaking, foam mattresses will have a lower baseline of durability, while coil mattresses will last longer if they are high quality. However, unprepared mattresses will break down much faster no matter the materials used, especially for larger customers. These mattresses have mixed feelings from customers. Some report lasting comfort, but others report quicker than average degrading.
Pros: Price, shipping, delivery, ease of getting into bed room, highly rated by consumer reports
Cons: Firmness is mislabeled, requires a memory foam topper to be comfortable
I did a lot of research before buying our new mattress. We had never done a memory foam mattress before and thought we would give it a try. We went to a department store and tried out their memory foam beds to make sure we thought we might like it and picked the right firmness.
I have traveled for a job and stayed in nice and bad hotels. I thought I was pretty experienced to differ mattresses and comfort levels. This one is rated medium firmness, I would say it is medium firm to firm. It is much firmer than any mattress I have slept on. I could see how it could be firmer so I won't say it should be rated firm, but it is at minimum medium firm. There is no feeling of memory foam. There is almost no give in the mattress. You expect a memory foam mattress to give to your body a little and you fit into it. This does not happen with this mattress. I was excited to see what the pearl gel memory foam felt like. There is no indication of pearls, gel, or memory foam on the top layer.
After researching mattresses for months and with great fear I ordered this matress based on Costco's return policy, consumer reports rating, and customer reviews. It arrived by courier ( He even dollied it into our bedroom )! It unpacked as it should. No smell , no waiting - we slept on it that night. I had left the board that I had been using on the box springs but after a 2 weeks removed it because I read that it should not be used on the floor but on box springs. It went from firm to medium and viola. Perfect!!! I've had the matress over two months and purchased gel pillows. Honestly, I've never had anything this comfortable. The gel pillows work in sync with the matress. It's NEVER hot. But now that it's winter it's not cold either. I'm just in awe when I lay down at night and even more pleased when I wake up. Great job Novaform. Great Job Costco! My first purchase from your company has made me a life long customer.
I have had this mattress for @ 2 years. I think it will probably last forever, but it is NOT medium in firmness. I would say at least medium firm +. You do not sink in as you do on most memory foam mattresses, but surprisingly I do sleep very well on it. It really doesn't feel like a memory foam mattress. Seems good for both side and back sleepers. I do wish it was a little softer. Slept on a water bed with 'pillow top for years until the bladders could no longer be patched. They don't make water bed mattresses like this anymore (solid pillow top and sides that drop over base and bladders. Probably this was the most comfortable mattress I've every had. Unless you like a soft mattress you will be very happy with the Serifina' and at $650 ($799 Cal King which I have)nothing else comes close.
Lesson learned- don't skimp on a mattress you spend 7-8 hours using and if you have back/neck problems. Wife and I bought this and gave it a ride for 30 days. Felt it was too soft, did not hold form. Returned it after 30 days. It came in a box the size of a dorm room fridge. That should probably be a characteristic of caution in the first place. Might be suitable product for college kid looking for something that can ship easy. Not a great solution for neck/back problems.
For years we wanted a Tempurpedic so when Costco.com offered them a couple of months ago, we took the plunge. For six weeks, I did not sleep. The Tempurpedic was hot, hard as a brick, and uncomfortable. It was also excessively tall.
We returned it and replaced it with the Serafina Pearl Gel Mattress. Oh. My. Gosh. It is like sleeping on a cloud. I like a softer mattress while my husband prefers a firm mattress. We are both happy and are sleeping through the night with no tossing or turning. Do not hesitate to get this mattress!
Costco service and delivery and price were all great. I just could not stand this bed. It was not medium. It was very firm. Felt like concrete. I switched to the Valentina and I love it.
I bought this mattress a month ago and haven't gotten use to it yet. Will probably send back. Will maybe try the more expensive softer mattress.
Having had a 15 year old firm mattress the change to this memory foam mattress its everything I had hoped it would be. Sleep on both side and back, both very relaxing and comfortable.
We needed a new mattress, so I researched them starting with Consumer Reports, which rated this their top foam mattress. This is our first foam, so I really didn't know what to expect. Also, we have never purchased a mattress without first trying it out in a store. It arrived quickly and was fascinating watching it expand after to cut the plastic off it. I have to say that it's harder than I expected, but I am getting used to it after two weeks. My wife, who sleeps on her back, is sleeping noticeable better. There's also no movement transferred to the other person, which is a good thing. Neither of us noticed any unpleasant smell as some have reported.
Relying on the glowing review in Consumer Reports, I purchased this mattress more than two months ago and believed the enclosures that said it could take a while for the mattress to fully set. Well, sufficient time has elapsed and it is still the most uncomfortable mattress I have ever slept on. (It replaced a 16- year-old mattress but thank goodness I hung on to that one because I plan to put it back on my bed and give this mattress away.) The mattress is so hard, I wake up with a backache every morning and my Activity Tracker shows I am having very restless nights. I actually have to fold up several blankets and use them as padding under me because the mattress is so hard and uncomfortable. I would not even call it 'firm,' it is the hardest mattress I have owned and I always buy firm models to provide more back support. Worst money I ever spent!
I researched alot of mattresses on their comfort, side and back sleeping and reviews and price. This one came out on top. We used to have a waterbed and thought it would be difficult to adopt our lifestyle to a regular bed. We got flannel sheets and have slept like a baby ever since. It's hard getting out of bed in the morning. Very nice.
I bought this bed in February 2016 and like the other reviews found it very hard. After about 2 months, it become much more comfortable. I love it now, find it very comfortable, doesn't make my back hurt and I would certainly buy it again. You have to give it a few months and then it's great. If you are looking for a pillow top snuggly bed, this is not for you.
We bought this a month ago and cannot be more satisfied. We did think it was slightly more fim then we expected but after 2 nights of sleeping we realized it was a medium firmness. The most comfortable mattress ever. Havent slept this well in years.
1. I read all the reviews on the COSTCO, other sites and checked consumers overall this bed seemed to be a good choice as far as quality. 2. As you can see from the reviews some people say this bed is to hard, some say it is to soft and others say it is just right. Depending on your weight depends on how much you 'sink' into any mattress that also effects how hard of soft the mattress 'feels'. 3. I enjoy a 'firm' mattress in which I do not sink a lot into it but I do expect it to conform to my body this mattress works perfectly form me. 4. Smell: Upon delivery I set up the mattress and aired it out for about 6 hours. I then put on a mattress pad and bedding. The only way to smell anything unusual was to put your nose to the mattress and that lasted about 2 days. 5. Price: After checking warranty and cost this bed via COSTCO gave me the best value.
I did hours upon hours of research and thinking before deciding on this mattress I read every review posted. How firm a mattress feels is different for everyone so how can you yourself decide until you have one.? I needed a firm mattress for my back issues. This one was rated so well and it was a no risk purchase. I decided to give it a try. I am a woman approx. 130 pounds. My weight didn't put a dent in it anywhere! I felt like I was laying on top of it with little to no give at all. It also took a couple of days to expand to be able to press a hand impression into it. It did not get hot, The smell of it was minimal, it is very heavy, easy set up and this is an good quality mattress. I was hoping it would conform to my body a little but it didn't. For me, it's as firm as any Firm mattress without plush or a pillow top I've tried out there. The medium firmness rating doesn't feel accurate for me or my weight at least. It's harder than the highly rated Se@ly kelburn also recommended by CR. Hope that helps as a way to compare for you. Love Costco and always will!
If you've owned a high end pillowtop mattress you will not be satisfied with this bed, If you haven't its perhaps doable, For the money right aroud 600 dollars its worth the money, It actually helped my wifes back, And she woke up without her usual discomfort, For me it felt to firm and lacked that luxurious feel and its not something i can imagine spending 1/3 OF MY LIFE ON FOR THE NEXT 10 YEARS, That being said again its still worth the money.
We have tried a number of the Novaform mattresses. Each one seemed to have great promise but fell just short. We love the affordability and potential of the mattresses. Our first Novaform serafina pearl gel memory was too soft (rated in top 4 on CR), but nice if you like plush. We then tried the Novaform firm memory foam, which was firm and comfortable but retained so much heat that I was waking at night changing shirts from sweat. And finally the serafina pearl firm with gel, once again too soft. I must admit, I have had lower back problems, so I look for firm to extra firm mattresses. For now, we are giving up on foam mattresses.
I've been sleeping on this mattress for a few weeks now and find it to be comfortable. The mattress is softer than I prefer with a very plush top layer that hugs your body and offers support (at the lower back). You do sink into the mattress a bit which can slow you down when changing sleep positions. Before this mattress, I slept on a foam mattress - it retained heat but I feel this mattress retains more heat. My spouse really likes this mattress though. There isn't any edge support. There is an off-gasing smell that lasted up to 48 hours after unpacking. Overall: nice support, a little too soft, retains heat but I like it.
At first we thought this mattress would work for us, but after a week we knew it wasn't supportive enough. We are 60 and 59, 230 and 130 lbs respectively. I am a side and back sleeper, my husband a side and stomach sleeper. I noticed that the mattress didn't hug my lumbar region while sleeping on my back. I could feel a gap there and there shouldn't be. My husband thought it was too squishy, not firm enough. What we both disliked is that the sides cave in when sitting on the edge of the bed, so you basically slide off. We had to return it and we are now trying a Sterns and Foster pillow top firm. Back to basics for us.
We were moving to Ireland and wanted to buy new beds for everyone but we had a budget as moving countries is expensive. We gone One queen and the kids got full size each. I was very nervous as we would not be getting to try them untill we were in Ireland. However, I need not have worried. They were the best purchase ever! I normally have back issues and have never woke up even once with stifness or soreness in my back. Still totally love this bed after nearly 10 months. My only issue is now when I visit friends or stay overninght else where, the beds seem completely sub standard.
My husband and I bought this to replace our 7 year old tempurpedic. This Novaform 14" Serafina is the most comfortable mattress my husband and I have ever slept on. That includes all mattress's at hotels, friends' and that we've owned. We're in the mid 50 to early 60's age range. It gives a firm but soft cradling support and is not hot like our previous memory foam. We read reviews in Consumer Reports and this met our budget and was one of the top rated mattress's. We got it on sale and is a great value even at full price. Highly recommend!!
We purchased this mattress last year for a vacation cottage. We allowed it to sit opened on the bed overnight before we slept on it. We own a pillow top mattress at our home, so this was our first Memory Foam mattress and we purchased this based on good reviews and the price. The first few night we slept terrible! We both woke up sore each morning. After about 5 nights we finally started sleeping better. I do find it to be hot, especially if you are sleeping on your back. It is soft on the top, but very firm underneath so you have good support. We are going to buy a mattress topper to try and soften it even more to what we are used to sleeping on. Overall for the price it is a good mattress, but does take time to get use to.
I love having a king bed, it is lovely! First time trying out a memory foam mattress. My husbands only request was to get a firm mattress. I would say its more of a medium-firm. You do sink in a little right away. I woke up the first week with sore back, which I never have before on my other spring mattress, but I haven't recently, so I am wondering if my body had to first get used to it. I also am 19 weeks pregnant, which could have been part of it, or that the first week we didnt have a platform for it yet!! Me or my husband havent had any issues with overheating on it like I read in some of the reviews.
This was a first....after shopping all over for a firm mattress, (costs were &1200-$4800+). Reviewed Consumer Reports, this mattress was very highly rated and less than $1000. Then it went on sale in February!!! With Costco's return policy we decided to give it a try. Then we learned it would be coming in a box!!! A king mattress in a box!!??!! When it arrived...in a box...flat as a pancake...there was no way this was going to work.....wrong....within three hours this 'pancake' turned into a full size king extra firm mattress!!! No more tossing and turning it's the best nights sleep we've had in a very long time...granted, it's only been a week...but so far so good. Would and have recommended this mattress to everyone we know.
I researched mattress online. This one came in the top 10 at number 5 . I bought this mattress 3 months ago. I always had a coil mattress and needed a change. I knew I could return it if I was not happy. Costco is great to deal with if there is a issue. It is the best mattress I have ever slept on. Extremely comfortable, not hot, my back even feels better. My wife feels the same way and she was really concerned. She is not tossed around when I move or turn over.
We tried both the firm and the medium firm version of this mattress. The medium firm was available in warehouse and the firm only available online. My wife chose the firm version do to less motion transfer and no sag/roll toward the center due to my laying in the bed. She was able to get rid of a boomerang pillow she previously needed for side sleep with our Sleep Number bed that we got rid of. It took about two hours, a roll of heavy duty packaging tape, clamps, 2x4's, and a vacuum to get the medium firm mattress small enough to return to Costco...but they did take it back.
Frankly, my one star is probably unfair, but if you love a very hard innerspring, as my husband and I do, do not be lured in by the "firm" label. That's firm for a foam mattress, not firm for a mattress in general. We sunk into it as if it were a marshmallow. In fact, after trying it for a few nearly sleepless nights, we dragged our old rock-hard innerspring mattress onto our bedroom floor and there until we were able to lift it off our bed and arrange to return it to Costco. We are SO thankful for Costco's return policy. I cannot imagine sleeping on this huge marshmallow for another night.
We bought the mattress online through Costco only because they don't carry California Kings in the warehouse. It two weeks to get it. Unpacking it was not to difficult. It's been a week since we've had it and the mattress still hasn't fully reached its full shape. The bottom right side is still smashed. As for comfort, the only option was to go with firm in a cal king. It's like sleeping on flat mat, there is no give, no comfy feeling. I can't seem to find a comfortable position and my lower back is achy in the morning. Will give it one more week like the instructions recommend but doubt very seriously I will keep it. Not at all what I hoped it would be, the delivery time, the shape not right and the total lack of comfort, especially for the money.
My only regret is not buying one sooner! I'm so glad that I took the time to go lay on a few different beds first. I even got fitted by one of those computer beds that measure all your pressure points to figure out how firm of a bed you need. Being a big guy (6' 300lbs) I'm so glad I went with the firm Serafina. You do sink in a lil little, but only really enough to form to your body. I have nothing bad to say about this bed and would recommend it to anyone.
Many thanks to Costco for their return policy. This is the second mattress I have purchased from Costco in the last six months. It is quite firm which is what I needed. The first purchase seemed fine for about two weeks, but then the "sleep impression" began to appear...sort of like a troth.
I was hesitant about buying and surprised to receive it in a box, but what a great mattress. I am 6'4" 320lb and the firm is surprisingly comfortable for me and my 5'3" 123lb wife, We love it. A !2" mattress might have been better, our deep sheets are not deep enough for the 14" mattress
I bought this bed a couple of months ago and love it. It’s the perfect firmness. It’s very similar to the Tempurpedic medium firm and softer than the Sleep Science Black Diamond. I’m a side sleeper and it does not hurt my shoulder like the SS Black Diamond did. This bed is an incredible value, especially when it’s on sale. I highly recommend it if you have laid on the Tempurpedic medium firm and like that firmness level.
So we ordered a "bed-in-a-box" from Costco, thinking we had ordered the King sized Novaform Comfort Grande. Shortly after receiving an email confirmation, the email read "Serafina Pearl." Initially, i was scrambling through different websites to see a comparison of the 2 beds. The Comfort Grande was said to be less firm than the Serafina Pearl. I was thinking that the Serafina may be too firm as the Comfort Grande eluded to the fact that it too was a firm bed. Now that I have received the mattress and have slept on it for a couple weeks now, I am so happy that we stuck with our accidental purchase of the Serafina Pearl. The mattress has the perfect amount of firmness that my wife and I prefer. Also, the king size makes this bed even more amazing as we often share it with our 2 kids and a 70 lb dog.
Let me start this review by saying that everyone is different. Back problems run in my family. I am only 26 and I have back issues already. I workout, I stretch, I walk, I do yoga, but all of that won't matter unless I have a quality mattress. I tried an online mattress company, and it was super comfortable, but made my back pain worse because it was too soft. This is the perfect amount of firmness. Give it a few weeks as you would with any mattress. Your body may be sore because it needs to adjust to a new mattress. This was well worth the money and provides great support. The only con I can think of is the weight. It will be tough to move. But it is worth it!
My only problem is that there appears to be no way to determine before you purchase what firm means when comparing foam mattresses of different companies. Our first firm memory foam mattress from Costco was 7-8 heard old and finally lost its rebound. Our new foam mattress labeled firm is as soft as our sagging old memory foam mattress. Is possible it was mislabeled? Thanks for listening. W F Bolin
Mattress gave off unbearable heat. Not sticky, sweaty heat - just steady, intense heat. Impossible for me to sleep. For ages, at home, hotels, friends' homes, I fell asleep very quickly after laying down - usually 1-5 minutes. With this mattress, if I was lucky, I'd finally fall asleep 90 minutes after laying down. Then I'd wake up every 60-90 minutes because I needed to sit up or turn to let my back cool off. (I normally sleep like a rock!) Tried for over 2 weeks thinking maybe it would ease. Extreme disappointment as quality otherwise seemed good. Minimal odor - way less than expected. Pretty firm but not overly. But the heat was crazy horrible. Had to return.
I just bought this mattress less than 1 week ago. I desperately needed a firm mattress following a recent bad back injury. This mattress is NOT FIRM BY ANY MEANS!!!! You sink down into it, and it's difficult to get back out of bed. The sides cave in when you sit on the side of the bed.
This is hands-down the best mattress that we've ever owned! We were a little hesitant to purchase a foam mattress, having heard stories of how hot they were to sleep on and how hard it was to move in the bed. However, we have experienced neither problem. The bed is not hot and neither of us have experienced any problems moving on the mattress. We both sleep better than we ever did on more expensive mattresses and for the first time in many years, I have no back stiffness when I wake. We bought the mattress to replace a Sealy hybrid that was only 3 years old but it was no longer comfortable to sleep on. I highly recommend this mattress.
My wife and I have had our bed for about 3 weeks now and we couldn't be happier! This mattress is top quality and is amazingly comfortable. No more neck, back and hip pain. Couldn't be more pleased with our purchase. This bed is "bang for the buck". Our last bed we purchased 10 years ago and paid 4 times as much. Our new mattress is so much more comfortable and the rest we get is incomparable. Highly recommend! Two thumbs up!!
My wife and I bought a Simmons BeautyRest Mattress two years ago for $1800. After 6 months our spine/hip health started decline. Going to orthopedics etc and spending money that wasn’t necessary to find out after buying this Novaform mattress, our 2 year old mattress was the cause of ALL of our issues. We got the firm mattress and it’s the most amazing sleep we’ve had in forever. Do not hesitate to buy this mattress. For $800, it saved our hip and spine health. Do NOT get caught up in the lies of mattress store prices or sales people.
This bed was perfect and everything I'd hoped it would be... at first. After having if for a few months it seems like it's wore down in the middle of the bed where I tend to lay more often. If I try to lay on the edges I just roll to the center. It seemed to good to be true at first, but I don't think they're built to last.View More Reviews
I feel like it already may be sagging in the middle since that is where I sleep the most, but is very soft and comfortable
I waited a long time to write this review because most beds are great when you first get them. But there are huge sleep indents where my wife and I sleep, and one big raised lump in the middle of us. I'm a big guy over 250 pounds, but my wife is barely over 100 pounds. I understand how my side has been messed up, but not hers! Now after 18 months of sleeping on the mattress it is way too soft and way too lumpy and we are searching for a better brand.
I wanted a memory foam mattress for years after sleeping on one on a hotel. I refuse to pay $3000 for a mattress. I bought this after reading the reviews. I have had the best several months sleep ever. I don't wake up sore anymore. We did not experience any of the smell reported in other reviews. You absolutely cannot beat the price!
The mattress arrived timely. We let it rest a couple of days before using it on the bed. There was little to no off-gassing smell and my niece says it sleeps very comfortably. Very good purchase! Thank you.
When I see this in the Amazon Primeday, I said to my self 'I Want One Of Those'. I have full size bed frame that needs a bed mattress. As advertised, a full size is measured 75 x 54 x 10. I like as it is 10 inch thick. Ordered a full size, got it. packaged like a vacuum seal, it is heavy . Opened and placed it on my bed frame. And now I said to my self, Oh! NO!! S....!!!. It is wider than it is advertised. It is 56 inch wide, and it won't fit my bed frame. Mattress is firm and has a nice cover. I will return it and now my problem is re-packing it back to its box. Maybe return it in several pieces. Very dissappointed
This mattress was a steal!! I was so skeptical due to the low price but I am SO happy I ordered it anyway! It's firm, yet soft. Excellent quality. I've never slept so well. The only downside is being so comfortable that it's difficult getting out of bed in the morning!
so easy to set up. SUPER comfortable. My husband who is in chronic pain from just being a dum-dum when he was young sleeps better on this than any bed we have ever slept on.
Wow, I love this mattress. Just a fair warning, I never owned a memory foam mattress before this 1 so maybe I'm just too biased towards it. It's firm enough to support me sleeping on my back and soft enough for me to sleep on my side with no issues. It supports edge sleeping very well not that I like to sleep on the edge since I tend to fall off my bed when I do lol. The only thing I really really really disliked was the VERY strong smell coming from the mattress when you first unwrap it. Highly recommended you let the mattress air out for about 2 days. After I've done that I haven't smelled anything coming from the mattress.
I used to have insomnia. USED to.
The mattress is great I would say up their with the serta i comfort line and without the high price.
The mattress has great support for the body and even has edge support and does not heat up like other memory foam mattress.
I am not really a one position sleeper and have no complainants unless you want a extra firm or a ultra plush mattress as I would rate it the sweet spot.
I love this bed. I was a bit skeptical initially as I have never purchased a bed without actually going to the store, however I did a little research on the company and made the purchase. I am very happy with it. I look forward to purchasing another one when I have a place to put it.
It was hilarious seeing a queen size mattress come out of that (relatively) tiny box. It had hardly any 'memory foam' smell out of the bag, even less after letting it sit for 24 hours. Very comfortable, but one of the firmest mattresses I've ever slept on. If you don't like a very firm mattress this might not be the mattress for you.
Good mattress for the price. Hard to tell if it will hold up over time. Edges a bit soft.
I received what appeared to be used mattress with oil on one side and tears on the other.
We have had the mattress about 3 weeks and it has exceeded my expectations. My old mattress was very expensive and it was never this comfy. I always woke up extremely hot and sweaty,so you know my concerns about switching to memory foam. I'm soooo pleased ,cool and rested. LOVE IT!
This bed is firm. If you like a firm mattress, you'll probably love this one. Personally, I expected more shape contouring from a bed this expensive. To find out why it's not great I unzipped the top cover to discover it is simply an 8-inch piece of upholstery foam with a 2-inch piece of memory foam glued on top. That's it.
On the plus side, the cover is stretchy and seems like relatively good quality except for the fact that it has a part where it wasn't sewn correctly and is falling apart along 2 inches or so of the seam. My wife likes (but doesn't love the bed). I am sleeping OK, but find it uncomfortably firm. I've gone ahead and put another 2 inches of memory foam on top of the bed and I'm hoping it will soften things up to my satisfaction.
Another positive feature is that there was very little odor when we opened the package and it dissapated quickly.