When this arrived I was very concerned the moment I got the box. It was way to light to be a king size memory foam mattress. I pulled it out of the plastic and it grew very quickly. No smell on the mattress whatsoever. There was just one part at the top that took a few hours to get to full height. Now for the test. When you sit on this mattress you sink down very quickly and its super soft. This concerned me because being a big guy 6'-9" and almost 300lbs I needed something supportive. I was worried but willing to try it. I honestly was surprised by how supportive it was despite being so soft. I am a side sleeper so I like it a little softer for my broad shoulders. This is decent, but overall I find myself sinking way too deep into the mattress and ultimately having to move constantly throughout the night to find a comfortable position. Also due to the lightness of the mattress you you feel any movement. My wife and I feel each other moving all night which makes it worse. I am returning it because it just doesn't meet our needs. Weirdest feeling mattress I have ever been on.

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.

A molecule is much more than the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance. It is also a mattress. It arrived to our house in perfect condition. I cant remember who delivered it but they did a fine job. This molecule is not small. It was very quick and easy to set up. Very low odor emitted for the first 24 hours. This was a non-issue for our family, but for those who are very sensitive to odors it may bother them. The mattress was for our son. The morning after he slept on it I asked how was it. I received the following reply - "That was the best nights sleep I have had in a very long time". Time will tell but so far OUTSTANDING!!!!

Awesome mattress, nice and firm with perfect support where you need it. As soon as packing was opened took it's shape immediately, no needed to wait. Highly recommended for those with back problems and trouble/light sleeping. When my husband turns, moves, etc. I don't feel a thing and doesn't wake me up.

Purchased this because my fiance had been complaining about my old mattress for quite awhile. We split the cost 50/50 since he was the one who really wanted this. A week after getting the mattress, he decided to pick a fight over something trivial and since I was tired of always taking the blame to save the relationship, this argument became the last straw and I let him break up with me. Been sleeping like a baby!

We bought two twin mattresses from Sam's for our king sized adjustable bed in January and my husband just couldn't get comfortable in his because it was way too soft, so we purchased this one as a replacement. He loves it! After trying his out, I decided that I love it too and will be getting one for myself. Of course, Sam's was great about returning the first ones so that made it even better.

I tried several mattresses before getting the Molecule ArcticLux and I wasn't comfortable on any of them. With the ArcticLux, no tossing or turning, bouncing up/down or restless nights. I found a great mattress at an affordable price, definitely worth every penny!

This mattress is comfortable enough but it was not cooling, and it is very slick. We tried two different kinds of sheets and neither would stay tight on the mattress both would slide off every night. It is also important to note that you need to pay attention to the warranty. You are not getting the warranty from the actual company when you buy through SAMS. Not that we had any issues with this but when I went to question about the sheet problem they said they had nothing to do with sales from SAMS or warranty.

First bought this mattress for our daughters bed. Enjoyed the comforrt level of this mattress so much, we bought another one for our main bed. Highly recommend this mattress.

I was skeptical buying a bed in a box. The first night sleeping on this mattress was amazing. No lower back pain, no tossing and turning. This mattress is firm, supportive and comfortable.