Foam/Air CushionSkil Care Foam Air Cushion is a pressure relief and redistribution cushion that provides the softness of air on the top and the stability of a foam bottom. The air quilt surface inflates or deflates to meet residents pressure reduction and comfort requirements. Pre inflated high density foam base provides stability and prevents "bottoming out". It features incontinent proof vinyl inner cover wipes clean for easy care and low Shear II wipe clean outer