The mattress was prefect at first but has seemed to lose its firmness in the 5 months I've had it. I purchased the medium but feels more like a soft at this point. Has anyone had this issue with theirs? Is the company willing to return the product for a firm in hopes that it will adjust to a Medium or stay firmer? I'm not a heavy person by any measure so the weight is not an issue.

This is the 2nd time I have ordered a members mark twin xl mattress from Sam’s. The first time it was the 12” and this time it’s the 14”. Both times I received a mattress that was twin size not twin xl, contrary to what the box was marked as. I returned the 12” and now I will be returning this 14”. You cannot use a twin size comfortably on an adjustable split king bed or frame. It’s awful having the pillows falling behind the top of mattress all night. This mattress also has very little foam thickness on the springs, it’s only 4” thick on a 14” thick mattress. The mattress doesn’t even expand larger than 13”. I have enclosed photos of this. It’s so bad that the mattress cover is huge compared to the mattress. I enclosed photos of the length measurements along the top of the mattress and along the bottom of the mattress. Customer service states that the length is +-1” well this is 74” on the top and 77” on the spring side. I have 3” of space between the headboard and mattress with the bed set to flat and you can see in the photos that’s with the spring side up which is the longer of the sides, so compared to my husband’s side which is a foam mattress it’s a big difference. I don’t know what the other sizes of this mattress are like but the twin xl is awful. The springs are felt as the night goes on which I say is because of the lack of foam. This 14” also has less coils then then the 12” according to the product information for both mattresses. Save your money folks, this is not the bargain it seems.

Don't waste your time on this mattress. We had two more delivered after the first one was faulty, the first replacement mattress being both the wrong size and the wrong model. Turns out both the first and the third were faulty. Neither expanded to the full 14" height after more than a week of inflate time, both were 70" instead of 75". The return/replacement process is a nightmare. A private shipping company, which was terrible to deal with, was dispatched to our house to collect the mattress. The first replacement mattress was a California King instead of a twin. Unfortunately, we did not figure this out until it had expanded partially on my child's bed and partially on the floor. When I spoke with someone about the issue, I was told that my child could sleep on the california king on the floor while we awaited the pickup and replacement of the extremely too large mattress. It was a true delight to try and get a fully expanded california king out of the room, down the stairs, and outside for the aforementioned terrible shipping company to come and pick it up. While awaiting the pickup and shipment of the appropriate size model my child was completely blocked out of her room by the mattress and forced to sleep elsewhere. After the third and final mattress arrived we set it up and let it sit for longer than the 3 recommended days. It is still just 12" high and 70" long. It does not come anywhere near filling the cover and no sheets will ever fit it. It will be going back. Both of my adult children have had great success with other Sams mattress models, but do not get this one.

We desperately needed a new mattress for two adults and two dogs. We are larger people and sleep with 60 lb and 12 lb dogs. This mattress is supportive for all the weight it carries from us. We got the medium so we could feel the support but also a touch of plush. Better sleep days are ahead for sure. We have been sleeping on it for about a week and my body is already feeling much better. I have arthritis and my stiffness is much improved so far. As for the unboxing, it was so simple. We opened the box and took the plastic off. The mattress looked and smelled clean. We allowed it to rise and had zero issues with it not being true to size. just buy it already!

We bought two MM 14” medium-feel hybrid mattresses, and we could not be happier with our purchase. We sleep supported—without sinking in—and cool. And we rest for a minimum of 5-6 hours before awakening. Then it's back to sleep. These are the best mattresses we have ever owned, and they are competing against high-end, ripoff-priced mattresses that we owned previously and that cost $6,000 and $7,500 (specialty brands from San Francisco). If you need a mattress, don't delay. Members Mark will save the day.

No need for anyone to sleep on the mattress purchased at our local store for our guest room. Purchased the medium firmness %26 knew as soon as we sat down on it that the mattress was FAR too soft and had little structure to it. After reading several reviews that claimed it was like sleeping on a brick, we felt confident this would be a supportive mattress for our guest room. We didn't even place sheets on it and offer it to a guest to sleep on because it was so soft. The sides also sink low when sitting on them because there is no structure to support it. The cover is far to big for the filling - a gap of about 3" . The mattress is not returnable to the local store. So, after calling and getting a "new A.I. agent" who only said it couldn't be returned because it cost too much, I made it to a human working in a call center who had such a bad connection it was hard to communicate with him. I was transferred again "to someone who could help me" who did put a request in to have the mattress picked up. Refunds are not issued until after the mattress is delivered to their warehouse after an outside company picks up. 24-72 hours for the delivery company to call to setup a pickup time , unclear how long that might take. Was told it takes 5-7 days AFTER pickup for item to make it to the warehouse to be processed for a return. So no, this mattress is not "hotel quality" in the slightest. Don't be fooled by the name on the box or sleek advertising. This is a HUGE waste of time %26 a poor quality product. Unfortunately one would not know this until you purchase the box %26 open the mattress because it is not open in store to try. I would not recommend this producte even for an occasionally used guest space.

Like other people reviewed, this mattress arrived with a defects. On one side it was 4 inches short, on the other side it was 2 inches short. The foam was also misaligned to the base so the coils stuck out 2 inches on one end and the foam stuck out 2 inches on the other end. The cover also fits loose and theres no foam protecting the bottom coils so they pushed through my bed slats. Sam's Club was great about taking care of the problem. They offered a return or replacement. I opted for a return and purchased another mattress. Sam's Club sent out somebody to pick it up for disposal. Some people had good experiences but I'd recommend going with something else.

DREAMY! We purchased two more expensive mattress only to return for these. We are not fans of memory foam and this is a true hybrid. We choose a king split - (2) twin XL, one plush and one medium. Heavenly! The plush is very soft and the medium is on the softer side as well. Personally, I do not feel the “cooling” aspect, but they are not hot like most memory foam. Fluffed up in a couple hours and slept on them same day. Hopefully they will hold up overtime, but you cant beat the price! Highly recommend!

I've had this mattress for about six months now, and I'm a larger heavier guy. Every night of sleep on this bed has been great, it's just the right firmness, doesn't get to hot or to cold. So far there's been no loss or difference in firmness/comfort. Completely silent, and doesn't transmit motion when getting in or out of the bed. No real complaints to it, just make sure you have help carrying and unpacking it, it is very heavy.

Bought 2 of these for our new houses' guest rooms. After shopping around for a well priced mattress we chose these. Very pleased with the quality and price. Once out of the box we left them overnight to expand. They are very comfortable to lie on. I haven't slept overnight on them, but I have had a lie down to test them. I would buy them again for sure.