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.

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.

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!!!!

Like many customers buying a bed online was not easy and I was also skeptical to buy without touching or trying to sleep on the bed but I did it. I am very happy with my purchased and satisfied with the comfort at a very reasonable price. I love it, I will buy it again for my sister.

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.

The best mattress I've ever slept on, best night's sleep ever! And it has the recommendation from my Allergist! It does not allow those microbes to hibernate inside it and grow which contributes to allergies. No more encasing the mattress in plastic or 'water-proof' mattress covers. AND it has cooling technology that is superb; no need to add any toppers, special sheets or mattress covers! Perfect and the best price ever! Love Sam's Club!

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!!

Overall, I'm pleased with this purchase. This is my first foam mattress. Easier process to get it to my house as opposed to a spring mattress as it was shipped to my house coiled in about a 4.5 foot tall box as opposed to having to go to the store to strap it down on the back of my truck and drive 25 miles. I used my old mattress foundation and it fit that fine. I would say it's between medium and firm, possibly a shade more towards the firm side. When you sit on the side of it, the mattress feels very soft and I sink a bit, however, once you stretch out, it immediately firms up nicely. I'm a very hot natured person. It's not as cool as I thought it may be, but it's no warmer than my old spring mattress on which I have been sleeping the last two plus decades. It is cooler than other foam mattresses and toppers on which I've slept. Summer is a few months away so we'll see how it performs then, although I think it will remain acceptable as we've already had a few hot days and all is well thus far. No discernable chemical smells. Easy set up. It takes a day or two for the mattress to fully expand. This mattress is a bit thicker than my previous one so the sheets are a bit too small.

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!

I replaced my 11 year old $4,000 tempurpedic with this and I gotta say...I wish I hadn't spent that much money on a tempurpedic 11 years ago. This is a great bed. We bought two twin XL mattresses instead of a king to see if we can avoid the inevitable dip in the middle that every king size mattress we've ever had has developed. We've been sleeping on it for probably a month. It stays cool and it's firm yet soft enough for our liking AND the price was great.