Buyers beware! This mattress is comfortable in the center, however mine never formed on the sides. We waited 52 hours to get on it but it never took. Since then I've been trying to get a refund or a replacement on it but sam's refuses to take care of it. They keep saying they need to pick it up before they will issue me a refund but THEY WON'T PICK IT UP. I keep calling over and over and over again to get it scheduled but they keep telling me i have to wait to be contacted. Sam's club online customer service is by far THE WORST customer service i have ever dealt with. For everyday purchases, Sams is great. But if you're looking to make a large purchase with a "warranty" i strongly suggest you buy elsewhere. Sams does not stand behind their product and they make it outrageously difficult to get help.

I have purchased the Serta mattress at sams and the quality is way different. This mattress is very weak around the edges and the corners are worse. If you are using a platform bed that is slatted the mattress will push right through so you will need some kind of support between your mattress and the slots. I would recommend the serta bed in a box over this one for sure.

We're at day three on our Members Mark mattress, after returning a Casper mattress that we purchased. We found that the Casper was very stiff, and didn't breathe. On the flip side, this new mattress is super comfortable, and breathes well. It says cooling gel, but I haven't really felt cooling (It just has better airflow). For the price, I would recommend this to anyone.

Mattress is far too soft you will end up with severe neck pains. The mattress has completely compressed and now I am experiencing both neck and back pains. This all even though I didn't sit or sleep on it for 72 hrs. after opening. This scenario is absolutely absurd and very disappointing

Mattress sleeps well but after a couple of nights of sleep we noticed a wrinkle in the mattress/ fabric all the way across the middle of the bed. So now when we sleep on it you can feel the wrinkle underneath it. They sent a replacement, it done the samething.

I read other reviews and thought I could get away with some of the issues noted about this mattress but no. This is error purchase for me. The mattress is softer than the mattress I'm trying to haul. I literally sink into this mattress. I was expecting medium firm but it's not near it. Planning on returning it. My old mattress lasted over 10 years, not sure this new mattress would make half of that. I brought on sale so i'd say penny wise, pound foolish. Cheap is expensive! Also gives me heat not cooling at all, makes me uncomfortable overnight.

I thought that I wanted a softer bed but this is perfect. It is soft on top but you don't sink down in it. It does a great job keeping me in alignment. I have problems with my SI joint getting out of alignment and I usually have pain and night and have to keep shifting into different positions. But I don't have to with this mattress. I slept very well on it the first night. I also highly recommend the Member's Mark Premium adjustable base to go with it. It is amazing!!

Do not buy this bed If you are on the heavier side i weigh 280 my job provides a twin size mattress and i sink in completely there is no support and because it compresses so much there is no air flow so it becomes hot and uncomfortable this may be a good bed for thinner people i dont recommend if you are on the plus side

Purchased for the guest room. I didn't use it myself, but a visiting family member was comfortable and slept well. It's a very thick mattress, so if you use it with a box and a standard bed frame it would be pretty high. I used it with a fold up metal bed frame and a thin mattress pad under it, no box and it was high. Set up was easy for the twin size. I was able to do it alone. The mattress fluffed up fully in a few seconds. I didn't notice any offensive odors, but it wouldn't hurt to let it air out a little before putting the sheets on to let the new foam bed smell dissipate.

I purchased 2 Twin XL 12" medium mattresses to use with a King platform bed. While the mattresses expanded quickly, had no smell, and a perfect medium feel (not too soft/not too firm), they are not anywhere close to a Twin XL dimensions (38" x 80"). Within 15 minutes of unboxing, they each expanded to nearly 42" wide. Height only got to about 11" as well. 84" wide will not work on a 76 1/2" wide bed. I ordered online so they will be picked up, but it was a complete pain to have to plastic them up again for pick up.