We bought this in the summer after reading so many great reviews. It's such a hard mattress. And even after adding a $200 mattress topper, my husband and I wake up so sore. Not sure if I should contact Serta or Sam's Club for any kind of option.

I was very skeptical about this mattress. Have been looking at similar products i.e. Purple, Nectar, etc. Seems the closest competitor for this level of quality and type was still close to twice (at old price) the price but now at this price, this thing is a "no brainer" It is on the firmer side (even for my big fine body 6'1" and 225) it was a little firmer than expected. Bad thing? Not really. The support really seems to be helping. Also noticed that wife who used to snore loud enough that the walking dead would knock on the door to inquire what was wrong now seems to sleep nearly silently. A very welcome side effect. So overall is it in the same league as say Purple, Nectar and all the high priced stuff? I think so. Is it one helluva deal? You bet!

Not sure why other people have had size issues but this mattress DEF expanded after several hours to 12". We did lay it flat on the low profile box spring and didn't sleep on it for a day. And another person saying the cover couldn't be removed to be washed is wrong...there's clearly a zipper for removing the cover on the bottom of the mattress. It doesn't get easier to buy than this...box has handholds and wheels so you just pull it to your truck or SUV and load 'er in! Slept great on it and for the $, it can't be beat. Sure, I had a $2700 Temperpedic full foam in past....but it was warm and while I dont sink as deep in this Serta as I did in the Temper, I didn't notice while sleeping or waking without any aches. SO...money saved and value received.

We bought this mattress 3 months ago and have really tried to like it. My husband cant sit on the side of it without sliding off and hates it. And I have horrible difficulty turning from side to side while lying on it because I just sink into the bed and just this morning I couldnt even get out of bed without help from my husband. (Truth be told I am not a tiny woman, more like a 2xl, but I have never had this trouble with any mattress including cheap air mattresses.) So, we chatted online with Sams and they gave us a Sams/Serta number to call. We called and gave them all our information. Supposedly in a week or two someone will call us to arrange a pick up and then we have to call back with a pick up number and they will credit our account. Then we will move our 10 year old worn out mattress back to our room and maybe we will have an ok nights sleep until we can by a better one. What a hassle. I am not sure I like this whole bed in a box idea! Really not sure memory foam is all its cracked up to be. I think we will end up doing the old fashioned thing and go to a mattress store if and when Sams ever picks up this thing. So if you like a really super soft mattress this might make you super happy. Otherwise, think again.

I bought this mattress and after almost a month, it still did to inflate all the way. It is currently at 10-11in high. I tried calling the number provided in the description but since I bought it in store, I had to call the store directly. When I explained to the store the issue I was having with the mattress I was told I needed to bring it in. This is a King mattress and I live by myself, I cannot carry a 127 lb mattress into Sams Club. I was told "that was my problem and not Sam's Club." I am unable to return it or get a refund for a mattress that is defective. This was poor quality on a mattress sold as well as poor customer service by Sam's Club.

Bought this a few months ago. I'm average weight, relatively fit middle aged individual who normally doesn't complain much about any type of mattress. This mattress, however, makes my body ache. Whether I sleep a few hours or all night, I wake up super sore and miserable. Not sure if it's the mattress firmness or chemical allergies but it's making me miserable.

I bought this exact mattress a few years ago because I needed a firm mattress. I then moved to another state and it was easier to buy a new mattress at my new location - so of course, I chose this mattress. Because of various back issues I had to have a firm mattress. This is NOT the same quality mattress and is quite soft. I put an earlier review indicating that I was suspect since it came is a plain brown box ... but I tried to give it a chance. Well, it is giving me great back pain to continue to sleep on this mattress. With a ten year warranty, what are my options? Will Serta replace it with a FIRM mattress?

This was a big disappointment because it was way too soft for medium size people. Did not help with back pain like my 17 year old memory foam mattress that I loved. Top foam too thick, felt like I was drowning in bed. Worst was the foam did not recover from body impressions. Had dips that showed badly, so I'm returning it to Sam's. The mattress cover is nice however, if that means anything.

Great 12' Gel Memory Foam Mattress. It's like floating on a cloud.

I bought this mattress for my brother who's 380lbs and he loves this bed so far.