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Comfort Tech is a mattress brand made popular by its inclusion in Costco's mattress lineup. They make a variety of foam mattresses such as the popular Comfort Tech Aurora and Comfort Tech Serene. Their mattresses are inexpensive versus many competitors and most find them comfortable overall. However, some folks report issues with the durability, odor, and sometimes heat retention in some cases.
King Koil is a mattress brand that was founded in 1898. It started selling innerspring mattresses, but over the years has expanded to foam mattresses as well. You can find King Koil mattresses across the globe in local retailers. Some of their mattress models may be advertised under other names than are found below. Overall, they make comfortable mattresses in a variety of price points, but there were some concerns about durability with some models.
Based on our aggregated reviews and our scoring method, we recommend King Koil in this match up!
See Our Full Review of King Koil
Comfort Tech: 8.3/10
King Koil: 8.4/10
Comfort Tech: 8.2/10
King Koil: 8.5/10
Comfort Tech: 8.1/10
King Koil: 8.2/10
No Back Pain:
Comfort Tech: 8.2/10
King Koil: 8.5/10
Comfort Tech: $199-$599
King Koil: $499-$3999
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Some reviewers report loving these mattresses, but others haven't had as great feedback. Although there were good ratings overall, there were also some poor ones. Read on below for more information on the specifics and for some customer reviews.
These mattresses are better than average when it comes to support, which is ideal for those that are struggling with pain from a sagging mattress. However, some folks have described feeling discomfort overall, so take a look at some of the other reports from customers to make sure your choice is right for your body.
Edge support is how much resistance there is along the sides of the mattress. These mattresses do well overall, but heavier folks may experience less than ideal edge support.
Mattresses don't seem to be as long-living as they once were. Finding a mattress that remains cozy after 15 years just isn't as easy anymore. Yet, finding that diamond in the rough can save you lots of money. Unfortunately, sleepers have mixed thoughts about these mattresses. Many folks report no problems with durability, but others have comfort longevity issues on a faster time frame than is usual.
Sleepers had mixed things to say about these mattresses. Many report sleeping soundly and feeling cozy in their new mattress, but there were others that didn't experience the same thing. Learn more about this brand below!
Most customers experience these mattresses to be supportive, which means the support layers of the mattress help align the spine and work together with the softer comfort layers above. That said, there are a few negative reviews from customers, so make sure to do research to connect your purchase pick with your body type and sleeping position.
Overall, most reviewers report these mattresses have good edge support, which means most don't notice a depression when rolling towards the edge or sitting on the side of the mattress.
Bowling Ball & Density Tests
In bowling ball tests where the firmness is measured across the mattress, there is good even support throughout. That said, some reviewers describe rare support issues, so make sure it works for you before purchasing.
These mattresses get mixed ratings from customers on durability. We all want a mattress that stays just as cozy in 10 years as it feels now, but sadly not all mattresses last a long time. If you are thinking about buying a mattress that has mixed feelings on durability, make sure to take an extra look at the policies on return to make sure you are protected.
After being deeply disappointed in an overpriced Beautyrest mattress we thought we would try a memory foam as these seem to be the highest rated and with $100. off the price, it was worth a try. It was (surprisingly) firm to us, a little too firm. The next night I put a 3 inch memory foam topper ( already had it) on and it is perfect for us now. Our previous mattress had sagged after a few months and the manufacturer replaced it as guaranteed, but only with the same exact mattress! What is the use of that?? At least if this happens I have Costco's return policy and it was only $400 bucks not $2000. So far so good. I will follow up in two months.View More Reviews
We bought queen size Comfort Tech 10'' Serene Performance Foam mattress about eight months ago. It is very comfortable and feels almost soft to the touch but once you lay down on it it cradles your body without sinking into a hole. The Medium density description fits the bill. My husband is 6' and weighs 170 lb and I am 5'4'' and weigh 120 lb. Also I don't sweat at night which I used to on our previous foam mattress. The only small minus is that the edges are softer than on our older mattress which might be an issue for some people.
I bought this mattress for based on 2 reasons, price and reviews. Having never slept on a foam mattress, I was skeptical about this purchase. I decided that based on the price ($350 on sale) it was worth a try. After the first night I knew I had a winner. Two months of use and I am still waking up feeling rested. As a side sleeper, my arm and hips no longer ache in the morning. As a tummy sleeper, my wife's back doesn't ache in the morning either. We couldn't be happier. So glad that we didn't spend hundreds more for a traditional spring bed.
We bought this mattress several months ago, after researching mattresses for far too long! Desperate for a new mattress, and overwhelmed by the information and options available, we decided that this one was so inexpensive, it wouldn't be a risk to just buy it. We were unhappy with the uneven wear of traditional springs. Nor did we care for the 'stuck' feeling of memory foam. This mattress is a joy to sleep on! It is supportive and cushioning. I disagree with the review that says it holds the impression of your body. Ours does not do that at all. It is absolutely nothing like the memory foam mattresses we slept on in the past.
The great reviews for this mattress gave me the courage to order it sight unseen and I'm so happy I did/ Shipping took a little longer than expected but customer service was great. I don't know if I would have bought this if I'd just sat down on it in a store as it feels really firm at first and my last mattress was a pillowtop. With that being said, I love this. I can toss and turn in bed and not wake up my husband. I don't wake up with any aches or kinks in my body. Normal sheet sets fit it perfectly. When it was hot, I didn't feel like the mattress was guarding any of our body heat. I will definitely be replacing future mattresses in our house with this brand and buying one for the travel trailer! Warning: Definitely do not open the plastic wrap until you have the mattress in the room where you want it. That sucker just swells right up and it's harder to move because it doesn't have the traditional binding/edges like other mattresses.
I was skeptical because of the price but we loved it from the first night! More comfortable than our Temper-Pedic
Bought this mattress based on my friend's recommendation and the reviews here. It came in a small box and came to full size once opened. It had a chemical smell for the first 2-3 days but disappeared eventually. It is medium as listed, not firm. It sinks when you sit on it, but when you sleep you won't sink and feel relaxed. When you press it, it reacts lot quicker than a memory foam mattress, so you change positions easily. The mattress is great for side, back or stomach sleepers. We have been using it since 2 weeks. We are loving it and are having sound sleep every night. It doesn't feel hot when I sleep on it. We tried many mattress at stores and were skeptical to buy online. I thought of giving a try before buying at store, because of Costco's great return policy, but I wanna keep it since it's great and cheaper. I recommend this product. It's a genuine review and I was not paid to write this.
We have had this mattress for a little over a year and both my side and my husbands side of the bed have sunken in. This has caused the middle of the mattress to be higher than the sides so if you try to lay near the middle, you feel yourself rolling towards the edge of the bed. Also, though they say this mattress is Medium firmness, we would say it's slightly more on the soft side. Would not recommend this at all. I hope to be able to return this, but not sure if I can since we've had it for a year.
Bought this mattress Feb 2016, it was awesome at first. Agree with most reviews on quality of sleep but not so much on firmness. So if you sit at the edge of the mattress you will squish it all the way down. If you kneel on it, your knees will sink all the way down. But when you lay on it, weather on your back, stomach or side, the mattress will distribute your weight evenly and hugging you confortably for a great nite of sleep. It is truly amazing!!! I sleep in all 3 positions. On my old mattress if on my side, I'd wake up with aching hips and shoulders. Not on this mattress though. Instant relief very first night. It is now July 2017, and for the past 6 months I'd say, this mattress does NOT feel like it did at first. I rotated it according to instructions. But it's just not the same. According to the manufacturer description, it will feel softer as it ages. My wife and I however come to the conclusion the opposite is happening. The mattress feel as it gotten harder. It no longer conforms to our bodies giving us that even weight distribution I first described. And I am starting to pick up on pressure point when I sleep on my side. Wife and I have contacted Costco to arrange return. Haven't decided if will simply exchange for same model or get a refund and try different brand. Oh, also it claims to be cool, but it is not. We found it to be quite warm.
I have had this mattress for 8 months. I would say the first 5 months it was great! However, after waking with terrible back pain, I noticed how bad it was sagging. I tried several toppers and pads and it just didn't help. I always turned the mattress (it can't be flipped) and still didn't help. Could be good for an occasional guest bed, but not for everyday sleeping. I have to start the mattress search over again...
If you like memory foam in general, this mattress feels soft and relieves pressure. I would rate it about a 5 on the firmness level, with 10 being the highest. So it is a little softer than some other leading brands, which was a plus for me. If you are not sure about the idea of Serene Foam vs memory foam...it definitely feels like memory foam. It leaves the classic indentation where you have just been lying. People that are used to memory foam will most likely love it, if they like a plush feel. I, however am not and didn't like feeling stuck. I used Costco's return policy with absolutely no problems. They did just what their policy stated they would do.
We were hesitant to buy a foam mattress. This one sleeps cool, very comfortable. Didn’t find it overly soft, it’s a medium support in my opinion. Unwraps and fills quickly. No odor.
We bought this for our toddler who was moving into a twin bed. It is so, so comfortable. He loves it-along with everyone else in the house! Mattress was easy to unpackage and was ready to go in moments after expanding. Would highly recommend-such a great price! Would certainly purchase another when needed!
We purchased two Twin XL a couple of months ago for our adjustable twin frames. They are supposed to be medium firm but would have to disagree and lean towards soft. As of yet I have not noticed any defects and I will have to take a closer look and report back. The mattress is too soft so not sure what I will do.
Very comfortable. Great price
I bought this mattress for my 15 year old grandson. He absolutely loves this thing!! He said he is sleeping so much better, and he wanted us to come over and try it ourselves. He was right. It is extremely comfortable.
My husband and I bought this mattress 1 momyhsgo after sleeping on the same one in a spare bedroom at my friends house. It’s the perfect mix of firm with some give. First time my husband and I have been able to agree on a mattress!
I bought the Serene Medium foam mattress a few months ago, after I moved into a new house, for the guest room. I had originally bought an I-comfort mattress and box springs for my master bedroom at a furniture store and could not get a full night sleep on it. This mattress cost one third of what I paid for the one in my room and it is just so much more comfortable that I have moved it into my room and the guests will have to make do with the other one. The Comfort Tech was advertised as not too firm and not too soft. In a few words, it is Just Right.
We bought this for my son. It is firmly supportive and he loves it. I was thinking about purchasing the firm mattress for my husband and me, but the medium is firm enough. I have sat on it and it doesn't sink, or leave a lasting imprint. My injured tailbone wasn't bothered. We highly recommend this mattress.
Very happy with the mattress, process and delivery.
I bought this abut a month ago for my son, he loves it!
I love this mattress. It's firm but not hard or uncomfortable.
We received our comfort tech on December 8th, and have had the best nights sleep ever. The quality and comfort of this mattress goes without saying. We are full time RVers and travel a lot so a good night sleep is extremely important. All we say is this is the best mattress we have ever owned.
Bought it for my son. So far he is happy with it. He said it keeps him cool around his body. So, he sleeps well.
When I first opened the mattress, it comes flat with the air squeezed out, it seemed way too soft. One day later it was perfect so don't be upset at first. Costco had this on sale which made it even a better deal.
Mattress unfolded nicely, little initial odor. He slept on it right away and is quite happy to have upgraded.
We bought our king and my daughter loved it so much she bought the queen and loves it!
I had really good sleeps on this mattress.
Purchased September 2018. Delivered in about 1 week. Unpacked left open to air out Then put in bed . It’s great my son loves it !
Very good quality
Bought this 2 weeks ago for my youngest son He loved it because he used to have a back pain of the old mattress, Firm foam made him fall asleep easily. Thanks God we got it
Provides firm support, especially at the edges, while supporting my back. This mattress is a good choice for "side sleepers"
Bought this last year for my camper, and now I have them in my home. Very comfortable, Love it !
The mattress arrived in a box all rolled up and sealed. We rolled it out on the trailer bed board. It is not at full height right away but within a couple of hours it was perfect. I did buy a good mattress pad to protect it. It is firm, not hard though. We are both big people and I was worried about the past purchase we made of a foam mattress that we sunk into, making it hot and no support. All my worries about purchasing something sight and touch unseen were alleviated knowing we could return it. No risk here The first night we both slept very comfortably. No sinking in. No sore pressure points in the morning and not hot at all. This bed is as comfortable as our bed at home yay!!!
I have bought these mattresses on 4 separate occasions. Eveyone who sleeps on them loves them.
I bought the bed three weeks ago and the mattress is very comfortable to sleep on!
Needing to replace mattress in newly purchased Motorhome and without being able to try it out first we were very pleased that 1.shipping time was as stated, 2.mattress is quite comfortable as well. Would do it again if need be.
We are very pleased with this mattress. We purchased it for our family bunkhouse and it is working very well in that setting. We have recommended to our daughter already. Seems like a very good value for the money.
Have only had mattress for a few weeks, seems to be comfortable, and nice for the price. was easy to open and after just a few minutes was ready for use. Time will tell how it will be long term.
Bought two of them for my daughters about a month ago. Very happy with them. Great mattress for a great price.
This mattress is comfy! It's not too firm and not too soft. I love it! I was a little nervous before I bought it because the price is so low. Once I went in the store and tested it out, I knew I was going to get my monies worth. Granted I've only had it for about a week now, even my boyfriend has confirmed it's super comfortale. Get it while it's on sale.View More Reviews
I bought the twin mattress and much to my dismay there was about a 4 inch gap between the mattress and my bed frame. After measuring the mattress I realized it was only 36 inches wide, not the standard of 39 inches (despite the website listing it as 39 inches wide). I finally got a hold of the manufacturer and they said that their twins are "intended" to be 38 inches wide but that each one can differ by up to two inches. So you're basically left with a mini-twin. I will be returning this.
It's pretty comfy for the price but honestly I could have gotten cheaper at another matress store, definitely shop around more. It's not very thick and the euro top seems like it will be flattened very easily I give it maybe a year before it starts losing its comfort completely
My first set of guests found this to be very comfortable. I slept in the guest room to try it out and found it very comfortable. I am very pleased with this purchase and will purchase future items.
Nice product at the right price. My child needed a mattress for a new college apartment. We saw many options and even ran into a manufacturers rep at the store who helped us with good advice. As usual, the experience was great
love this mattress very comfortable the never disappoint
Great price and such an amazing mattress. The level of comfort is undeniable. I'm very happy with this product and would recommend it in a heartbeat.
This mattress was purchased for a bedroom that is only used for guests and when child is home from college. The mattress is very comfortable and the price is perfect for this situation. We have had it about a week and my kid loves it, it's 12:20 pm now as I write this review and she is still sleeping.
Buying this mattress was an amazing investment. Such a comfortable bed to sleep on and the service and delivery was very prompt and professional.
Very happy with what I bought slept like a baby. The delivery guys came set it up fast. Very happy with the service.
My husband and I are sleeping so much better since purchasing this mattress. It's not too firm or too soft, so you get support without feeling like you're sleeping on a board.
We love our new Mattress! The comfort and quality is unbelievable and for what we paid for it...we just love it!!
I purchased two of these mattress for my boys, without them being there to try them, and they just love it. They said it's so comfortable that it just conforms to their bodies. Mind you my 15 year old is 262lbs and said the bed is like a giant blanket. So hats off for a great product at a reasonable price...
I recently stayed in a bed in a breakfast in Maine--and loved the mattress I slept on. (I've got neck and shoulder issues to the mattress is often crucial.) I found a similar King Koil mattress and Raymour and Flanigan. The price was right; the delivery was prompt. "For this relief much thanks." Happy with my purchse: feels good!
When choosing a bed we needed a firm mattress with back support for me but yet some cushioning for my husband and the King Koil Perfect Response Elite Lakeside Pillowtop was "the perfect" choice. Very pleased with our decision and we even received next day FREE delivery - very nice!
I love my new mattress -and the service that came with it.
The bed is great. It came when they said it would and the sales person was wonderful in working with our family.
Bought this for my guest bedroom and it was given an A plus By my first guest. She couldn't believe it was a firm mattress. Would highly recommend.
WE NEEDED A FIRM MATTRESS AND THIS IS PERFECT! NOT ONLY IS IT EXACTLY WHAT WE WANTED THE INSTALLATION WAS WONDERFUL. WE NEEDED SLATS FOR SUPPORT AND THE DELIVERING TECHS DID IT ALL WITH NO PROBLEM. SALES PERSON WAS WELL INFORMED AND ANSWERED ALL OF OUR QUESTIONS. FLO L
I have a California King Mattress and it is the best.... I was not sure of down sizing to a Queen Mattress, but I must say that it was the best choice I love the way my body rest and the best part is that my husband and I are know closer....
THE MATTRESS AN BOX SPRING I PURCHASED WAS JUST EXCELLENT. ITS MEETS ALL MY STANDARDS FOR COMFORT .THE SALES PEOPLE WERE JUST GREAT HELPING ME FIND THE RIGHT ONE . I HIGHLY RECOMMEND MY CHOICE.AND THE STORE LOCATION ON CROPSEY AVENUE
It's hard to get out of bed after sleeping on this very comfortable mattress. You look forward to relaxing at the end of the day. I like it very much. Keep in mind, coupled with the box spring, it is very high. Can't go wrong with this one, unless you like it extremely firm. It has the right kind of firm but soft too.
Very happy with our purchase! Bed is comfortable. Not too firm, not too soft. Great quality for a great price!
The mattress is very comfortable. It's the best sleep I've had in a long time. It is a 5 star hotel quality mattress. I'm in love. I must stress that the hubby that works at night and have Insomnia also agreed that his sleep has been much better. Thumb's up.
I absolutely love my new bed. Best experience it's comfortable for my back after I come home from work cause I work 19 hours of the day doing labor and I just needed a new way to sleep. This is one of the most comfortable beds I've ever slept in and I highly recommend it to everyone.
The store was great the product was well priced and it was a convenient purchase. Loved the salesmen [Associate name removed].
This mattress has just enough firmness topped with a pillow top that has just enough softness! The price is perfect and the customer service was out of this world. No one trying to force me to the most expensive products in the store.
I am very much enjoying my new mattress. I was afraid it might be too soft but I'm glad I went with the softer mattress over the more firm mattress. While this is soft, it is still very supportive. This mattress is great quality for a good price.
great mattress sleep like a baby love it so much it is great
Best decision i made for my son he loves his new bed. Raymour and flanigan alway have good quality furniture which last a long time. I know when i shop with them im getting good stuff.
I needed a mattress for my fathers spare bedroom so I had a place to sleep when I visited. I didn't want to spend a lot but I wanted something that was nice and comfortable. This mattress is it! I have slept great when visiting him now and the Sales associate Tom P. in Clifton Park listened to my needs and took care of everything! Thank you Tom!
very comfortable but still with support!! Very happy!!
This mattress was purchased for a guest room and has only been slept on once with a report that is was very comfortable. The salesman was very helpful and polite. The delivery team were very helpful and delivered quite timely
I really like this mattress. It's really comfortable and it feels like I'm sleeping on a cloud.
My old mattress was still in good looking shape, but had outlasted the years I needed an extra firm mattress. My new King Koil plush is so comfortable, I sleep right through the night. Both my husband and I are well pleased with this purchase.
Mattress is unbelievably comfortable. My wife and I love it so much.
So far so good! Great price for the quality. I'll write another review after about a month or so
I am so happy with my purchase. I haven't slept this well in a long time. I definitely Recommend this mattress. The salesman was very knowledgeable and he listened to my needs.
I am very happy with my king coil mattress purchase. In the past I have always bought Sealy's. It is very comfortable and I am happy with it. Also the service at the store and the delivery was very good. I am also very happy with the guarantee on the mattress.
Mattress after the first night of sleep had a indentation in it already. Was or is not as comfortable as I expected.