I did not want to review right away until I had slept on this for a while to see how it held up. I've now slept on it every night for the past 6 months and still love it! I suffer from bad back/neck pain and was looking for something that would help relieve some of that. I'd been sleeping on an air mattress for the past several years because it was the only way I didn't wake up in agony. I didn't want to go with a really thick one though because I didn't want to have that 'stuck in the foam and unable to move' feeling. I decided to go with this one and have been using it as a mattress all by itself. I'm fairly lightweight (just over 100 pounds) and have found it works really well as is for me. I first bought it when I moved into my new place and ended up sleeping on a cement floor with it for the first two weeks. It was comfortable enough that I didn't feel the floor through it at all! When I first unrolled it it puffed up to full size in about twenty minutes, and had no weird smells to it at all. I've also noticed that even though I tend to sleep in the same places on it almost every night it's not becoming broken down or indented either, although it conforms to me nicely when I lay down on it.