So far I like it. It is more firm than I normally would like, but yet it was still very comfortable. I slept very soundly. Only time will tell if this continues. As far as the height of the mattress, after leaving it unfolded in my living room for 24 hours, then moving it to the bed(the move actually added more height), it now measures 12". See attached pic.

We purchased this mattress for our camper. We received the mattress today and took pictures as we opened it. I looked at a lot of mattresses before ordering and decided to go with this one since it had really good reviews. And another factor was we would be able to take back to Sams if I did not like unlike others ordering off the internet. I was worried it would not expand the full 12 inches but it did in only 3 minutes. I was amazed. I only laid on it for a little while and it is soooo comfortable I did not want to stay on it to not disrupt it fully finishing the setup but after reading the instructions it says you can immediately sleep on it. After sleeping on it for a night or so I will update the review further. It is well made and was packed very well. Very happy with it so far.

i have bought 4 of these mattresses, or at least i tried to. the first one i bought was a king and queen. after hearing amazing reviews i figured i’d give them a chance and after unboxing them and waiting the 48 hours they didn’t blow up all the way and they weren’t comfortable. after being sad about it a month later, a friend told me they got another and it was great. silly me, i decided to give it another shot and i got a full sized since i wouldn’t be sleeping on it regularly. this one actually did inflate but there was a tear on the side of it that i didn’t notice for about a week. i’ve heard so many great things about these mattresses so it was sad to have this happen. lastly, i got one more which was for a family friends birthday present because, against what i said, she wanted to try it out. and no surprise, it didn’t inflate. my fault for believing in the company but i wouldn’t recommend them. luckily, sams club refunded me for the mattresses and we just discarded them ourselves. i wouldn’t recommend these boxed mattresses.

This product is a memory foam & latex foam mattress. I don't believe it's a hybrid. I don't think there are coils in it. It comes delivered in something like a 2x2x4 cardboard box. The mattress is vacuum packed in plastic, folded in half, and rolled up. Once you cut it open, you have to let it expand for a few hours, even a day would be good. I would recommend that you don't throw away your old mattress just yet! After opening the new one, let it sit in the garage for 2 weeks prior to using, as the outgassing fumes are terrible and most likely not good for your health. After replacing the old mattress with it, you should run an activated charcoal air filter in the room for a couple months to take out the remaining VOC's that outgas.

We purchased this mattress at our local Sam’s Club 16 months ago. We got it to replace a 10 year old Serta mattress that had been great to us. We read through hundreds of reviews and decided to give it a go for the price point and overall positive rating. We both have horrible lower back pain since getting this mattress and it continues to get worse. There are indentations/slumps in the mattress on both sides where we sleep. I have resorted to sleeping at the top and foot of bed where there aren’t slumps but still wake up every single day with lower back pain. We wanted to love this mattress, but unfortunately we wasted our money and will be replacing it with something of better quality. We trusted the Serta brand but sadly won’t be purchasing another one of their mattresses after this.

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.

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.

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.

Purchased in Club. Firm Base layer is about 6 in, top 6 in is 3 layers of foam. I am big guy 240 lbs and 6'1". Way too soft for my back, and had trouble rolling over, felt like I was sinking. I returned it for one with thicker firm base and thinner soft top layers-no back pain and i can roll over without a struggle. No problems with the return at Club.

I ordered this mattress on black friday of 2018. The mattress we received only expanded to 10" even though the tag on the mattress said it's a 12" mattress. I thought it would expand to 12" over time but it never did...I forgot about it until 6 months later when i placed an order for twin beds for my kids. I called sam's and they setup an exchange and the new one was shipped the same day. I will always buy mattresses from sam's. I hope their service for other large items are just as good.