First it did not raise to 12" . Almost 11". The mattress is super soft and it sucks you into it. When you try to get out it bottoms out to the frame. It's the most uncomfortable mattress to sleep on. Sam's should be ashamed to produce this type of product. It's true, you get what you pay for as we thought we would try it out as we bought another brand similar to this and it lasted about 6 years and was very comfortable but that was not the case with this one. Don't waste your time taking this one home because you will be returning it. I hope they let us return it!

With mostly good reviews, my husband and I thought we would save some money and get a decent mattress from Sam's vs overpriced ones elsewhere. Man, were we wrong! When we first tried it out we thought "this is nice". It was softer than the medium-firm description. But the more you lay there, the deeper you sink. You get sweaty it's so hot. And uncomfortable. We had a crick in our neck the first few nights we slept in it (notice "in" it, not on it, because you are in this thing!"). You sink so low as your head stays on your pillow that your neck is in a very awkward position. We added a topper that helped some, but the mattress still sinks and sucks out topper in with it. It stinks right in the middle. We both wind up in the middle in this hole every morning. It's like a nest. A nest made by some gigantic bird that thinks we are its babies. If you like to sit up on your bed to watch TV or read, you can forget it with this one. Your bottom sinks in as you sit there and your little legs hang on to the top to keep you from getting completely devoured by the mattress. Reminds me of an old episode of "The Twilight Zone" or "Tales From the Crypt", I can't remember which one, but the bed was eating people. I really do not want to go through the hassle of trying to return this bed, especially because there is no way to get it back in the box. I don't live near by my Sam's Club either. On top of this mattress ordeal, they charged me twice for another item and can't take care of giving me a simple refund over the phone. They want me to drive sixty-six miles round trip to do that. I am very disappointed in customer service right now.

We had this mattress less than 2 months and the foam warped and bulged and is sticking up inside the mattress. We are disappointed not only because we spent over $400 and the mattress lasted less than 2 months, but it would be entirely too difficult to return as it comes vacuum-packed in a bag/box and is quite heavy. Attaching pictures, although I'm not sure if you'll be able to see the warping. Buyer beware--this is a cheap item.

This mattress was much softer than I thought it would be. When I lay down, I sink a little. I would not advise using a fluffy pillow with this mattress. Could be good if you sleep on your back but not your side or stomach. The edges have a lot of give so if you're not careful you could easily roll out onto the floor. It was easy to put on the bed. But make sure you don't break the plastic before placing it in the desire location. Once air hits, it expands. Also, I don't get as hot in this mattress as I did my other. Since I just have a car and not a truck, it was easy to transport. Just shove the box in my back seat.

This is the second foam style mattress that we have purchased. We have the King Serta 12" Sleep-To-Go mattress in our master bedroom, which we really like and have had for over two years (also purchased at Sam's). We wanted to save money on a mattress (queen) for a spare bedroom, so we went with the Members Mark brand this time. It was pulled out of the package yesterday early afternoon, but after about 8 hours of expanding, it still appeared very lumpy. The edges are not expanding much and the mattress appears to be closer to 8-9", not 12" as advertised. I opted to sleep on the new mattress last night to test it out. This morning when I woke up, I felt I was sunken half-way into the mattress. I'm 6' and 215lbs. I've never had any issues with other mattresses in the past. The mattress is VERY soft, nowhere as firm or supportive as our Serta. I will give the mattress another 24 hours before returning it or contacting customer service to get any issues resolved.

I bought this bed because my Orthopedic Mattress was beginning to get too hard for my older body. I had sore shoulders and back. This was delivered to the door in a large box. It's bulky but manageable, I am 65 years old and managed to move to the first floor. Once unpacked it rapidly began to expand. I let it expand for 24 hours. It appears to be about half to one inch short of the 12 inches advertised. I have no experience with foam mattresses so didn't know what to expect from Medium Firm. Turns out it works well. My stiffness is slowly dissipating though it took me a couple of nights to get used to sleeping on a foam mattress. I didn't get the chemical smell some reviewers noted, I still have a pretty sharp sense of smell. After about a week I am pleased with the mattress. It's hard to beat the value of the Members Mark and return guarantee. I took one star off for the actual height being shorter than advertised.

When we were looking at the matress selection at Sam's we couldn't find Soft type mattresses in store that would work with adjustable bed frame. We ended up on going with this medium firm Members Mark Hotel series and it turned out to be exactly what we wanted being that it's in a box and you can't try it out in store it actually was softer then what we pictured and for a side sleeper you feel nestled into the matress rather than on top and using pillows to get support its so nice what a difference it makes to sleep better.

Bought this at the end of may and here we are in July. Still has the chemical odor smell. In order to take it back, you have to have the box and be able to get the expanded mattress to the store. A bit ridiculous! Waste of 400 bucks. And this is the second bed from there that stinks. We bought a king bed the month before. So much for using membership perks to get a quality bed. Very disappointing considering the promises of satisfaction! Not satisfied. Not happy. Not renewing my membership.

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.

It's been a little over a year and we absolutely love this mattress. Putting on fitted sheets can take a little effort because of the weight, but no other complaints. Waking with no dull lower back pain was our primary goal and this firm mattress is the perfect for us!