Foam mattress sets have come a long way. In the old days you had two choices plain foam (cheap and hard) or rubber (expensive and smelly). Today engineers have produce formulations that provide a wide range of firmnesses and qualities. Latex (100% real rubber) is the most known. It has the luxury feel most of us look for but is the most durable of all the foam mattresses. One of our most popular mattress is the "Slumber Cloud" use mainly as Water Bed Inserts replacing the old water bladders. It is very comfortable, like a water bed, but provides great support that most water beds lack. The majority of the Slumber Clouds are now being used as regular mattress sets because of the extra plush comfort.