This replaced a worn out Casper and I'll stick with Molecule from now on! I plan to buy another one soon. Keep them coming Sam's Club! Comfortable, COOL, beautifully upholstered. Bed was easy to set up and expanded fully within 20 minutes. (YES, I timed it!)

Excellent mattress. So glad we took a chance in purchasing! Comfortable but has some firmness to it. I was having an issue with hip pain when laying on my side, not an issue with this mattress. My husband would shake the whole old mattress when he would get up, this mattress absorbes a lot of movement.

When we received our mattress, we opened it up and laid it on the box spring. Five hours later we made up the bed and went to sleep. Haven't slept that well in ten years. It's firmness is between medium and firm, compared to others we have owned. I know other people have complained about to hard or to soft but that is a personal thing. We love our mattress.

I bought a bed from sam's about 6 months back and it was uncomfortable, way too firm and gave me back problems. After reading the reviews and information about this bed, i decided to buy it and have felt a lot more comfortable sleeping and my girlfriend agrees as well. I would recommend to a friend, especially for the price point.

I was nervous about buying a bed in a box. Especially a bed I couldn't touch and feel prior to purchasing. I LOVE this mattress. It is firm and perfectly supports your back and spine. I have had coil mattresses and temperpedic mattresses and this is by far my favorite. I am enjoying waking up without aches and pains!!

This mattress has definitely made a positive impact on my sleep. I've had lower back pains and would wake up multiple times in the middle of the night. However, after switching from a firm bed to this Molecule bed, the pain has subsided and I can actually sleep well throughout the night. It has the right amount of softness and comfort which helps me to fall and stay asleep quickly. Plus, this mattress came in a nice, compact packaging and was easy to lay out. This bed has been such a life saver and I truly recommend this bed to anyone.

Must admit that I was hesitant about purchasing a mattress in a box, but it was a seamless transaction. PROS: Quick delivery, easy setup, very comfortable, minimal impact when bedmate moves around on their side of the mattress, the Molecule is much lighter in weight compared to the traditional spring mattresses and has handles on the side (which will be super helpful when moving)! CONS: One sinks in a bit when sitting on the edges, could use a little less plastic wrap to be more environmentally friendly...

I purchased this mattress only a week ago. So far, it is very comfortable. I have not experience any sink into the material. It's cool on the body. It comes with a zip covering. I love the way it was packaged. I would have given the review 5 stars but I ordered a full size and received a Queen size. It took over two weeks and a lot of trouble to arrange for Sams to replaced it!!

Horrible back support. Side sleeping is also painful you would think on memory foam it would be better. Mattress bounces everywhere with my weight of 160 lb. When me or my wife moves, there is no motion isolation.. this doesn't feel like either memory foam or innerspring

If you are a heavier person (300 Lb plus) DO NOT BOTHER with this or probably any memory foam mattress for that matter. I would sink too much once settled in a spot then it was uncomfortably difficult to roll over to the other side and to get out of bed. The cooling effect lasts all of 5 seconds. The mattress never fully plumped up like in the photo on the website. I literally got up after a few hours and went to sleep in my guest bedroom which has a regular firm mattress on it. I will be returning the mattress ASAP.