First off let me say that the mattress was shipped to our home quickly and with great "white glove service". Would recommend OS anytime! The mattress however is soft NOT firm. You sink into the mattress when you lay down in it (not on it) and if you sit on the side you feel like you are going to slide off. If you like a "soft" mattress then you would probably like this mattress. It seems well made but we prefer and though it was going to be a firm mattress so back it goes.... FYI - after the first night both of our lower backs were hurting. We actually stopped sleeping on it until the new one comes in (hopefully the "extra firm" mattress will be as advertised).