This high-quality firm foam is made from natural soy and is good for you and the environment. For those who prefer a firmer feel. Could be used for the top of the bed as a pad for those who prefer a firmer feel, or as the top, middle, or bottom layer of the mattress if you build your own bed. Foam only. It is normal for the foam to discolor when exposed to air and may have spots discolored from air exposure in the warehouse. Does not include a cover.