First off.. I am 29 years of age, 6'3 with an athletic build. I love this mattress (bought the medium firmness). I debated for about a month before I took the plunge and bought it. I tested a ton of these types of mattresses around town and didn't want to spend $2300 on one so decided to give Overstock a try. I read all the reviews and was very worried about clicking the confirm order button even though it got amazing reviews, but those few people who did not like it were sticking in the back of my mind. I have no clue what they were taking about... this mattress is very comfortable and you won't find anything cheaper. I also bought a memory foam topper just in case it was too firm, this mattress is comfortable enough to sleep on without it but I still use it anyway. I would suggest this mattress to anyone!!! Great buy!!!