I bought the Spring Air Radiance mattress to use for my college apartment. Since I am a college student, I didn't want to spend too much money on a mattress but wanted to make sure I didn't get one that was too cheap so it would hurt my posture/back. I ended up choosing the Radiance. It comes available in all bed sizes. If I had to describe how the mattress feels, it is very bouncy when you sit or stand on it but it is firm when you lay down. The quality is very good for a low-end mattress because it is made from spring air, a company that makes some good mattresses. If, however, you want a very firm mattress (usually better if you are older due to more support for your back) then this is not for you. But if you are looking for something affordable yet comfortable when you sleep, then give this mattress a look.