I've been a huge fan of foam mattresses since college because they're easy to move, easy to clean and air, and overall a great value for money. I was able to purchase this mattress on a popular site for a very reasonable price and I have owned it for over a year. When the mattress first arrived it did have a slight chemical odor, but I allowed it to air out and expand, per manufacturer instructions, and the odor dissipated after about three days. I prefer firm mattresses due to back issues and this mattress has remained nearly as firm as it was on the day that I received. When I first bought it, it was actually a little too firm but after a few weeks of sleep I was able to break it in a bit to conform to my curves. The mattress is truly very comfortable, especially for people who need extra lower back support. I'm on the heavy side, so I really appreciate that the mattress hasn't developed a "sinkhole" where I typically sleep at night. It's also very easy to maneuver the mattress and I suggest a regular rotation (once every two weeks) with a monthly "flip" for best use.