My daughter's crib transformed into a full size bed, she is 2 and we went ahead and transformed it because she would move so much and end up cramped in the corner of the crib. I purchased this mattress to help and hope that she would have plenty of room to move during the night, but she sleeps so soundly on this mattress that she is almost the exact place she fell asleep the next day. There is also plenty of room to lay in bed with her and read story books which we love. It is very confortable, but it is very soft, my wife slept on it one night with her during the transition and complained the next morning about her back hurting, but we are used to sleeping on a firm mattress due to my back issues. We are pleased with this purchase.

I purchased a foam mattress years ago and needed another one. So I went on line at Sam’s club.com and purchased this one. It arrived just as promised. After taking it out of the box as instructed and placing it on the bed to allow the mattress to fully form its correct shape, what an amazing comforting product!! Even days after it had continued to form and firm!! Extremely comfortable but firm!!!

I am disappointed in this product. It was supposed to be 10" mattress but after a couple weeks it still is at 9". The top layer of Memory Foam is too soft. Never seen memory foam to sink this far. Would not recommend. If I could send back I would be since it's so big I can't.

Very disappointed that it never rose to 10" level-- stopped at 8.25". Only reason for a couple of stars is because Sam's Club accepted the return with no problem. The mattress construction looked same as the one I have, which inflated instantly to the full thickness upon opening the box, but Zinus mattress never reached the height after 5 days and nights. Should have listened to the other reviewers with the same issue.

I thought it would be more hard than it is, usually I rollover at night and it feels like I am in a hole , the middle of the mattress is not as hard as side, probably will be returning to get a harder one . They make good mattresses, but this is too soft for me.

This mattress is firm. I read all of the reviews but took my chances. We added a 3 inch memory foam which helped a lot. Its for my 5 year old son but ol mom lays down with him when he wakes up in the middle of the night. So its taken some getting used to, but overall I am pleased. Easy to remove from box and we waited 34 hours before using it. It clearly states when you receive the mattress that you are welcome to still sleep on it even though it may not have fully expanded yet, but we chose to wait.

We purchased this for our teenage son's bedroom. Overall we are satisfied with the product, but it is not as firm as we expected. He said he "sinks" in the mattress. The price was very affordable so we feel like we got a decent mattress for the price we paid.

I live in a remote location and this was the perfect choice for a reasonably priced mattress. It is a little softer than I would like but the firm mattresses I have tried were rock hard so I'm pleased with the choice. It does have a very slight smell of the rubber that it's made of but not offensive as some reviews suggest.

Not happy with the mattress. Has been 3 weeks and the mattress has not fully decompressed. The corners are almost filled in, up to now they have appeared to be rounded with the cover being very loose. I would have been in real trouble if I had planned to sleep on this the day it was opened.

Jeepers this mattress even helped my hyper dog get some deep sleep with soft snoring!! She didn't even get up when I made a restroom visit. I'd say the pressure, weight and pain I've felt between my shoulder blades for over 20 years has lessoned by about 70%!! It could be that what is left is residual from my back bothering me for so many years. I wish I had bought this years ago if it was available and what an excellent price!!