This mattress got soft spots after a few months that made it very uncomfortable. I purchased this mattress over a year ago, but the performance has significantly deteriorated in that time. Most of the reviews here are from people who have been using the mattress only for a few weeks, so I think it is important to get a long term perspective. As others have mentioned, this is not a true 10-inch memory foam mattress. Only about 4 inches on the top are memory foam. The rest is low quality foam that you could buy at a fabric store for a few dollars. Since it is not true memory foam, it does not last. It seemed relatively firm at first, and we were very excited about it. But pretty soon it was sagging and soft. My boyfriend and I slept on the mattress every night, and within a few months there were big indentations where we had been sleeping. Even after we got up, the indentations remained. We are not tiny people but also not overweight, just two average adults. It felt like I was sleeping in a valley, and it was horrible on my back. My boyfriend hated the mattress so much that he started sleeping on the couch instead. With one person, the bumps and valleys weren't quite as bad. But, I still wouldn't call it comfortable. We decided to get rid of the mattress about a year after we bought it. I would recommend that you avoid this mattress unless you want to use it very rarely in a guest room, or it is for one person who is pretty light.