Visco-Foam Cushion by Skil-Care provides positioning and pressure relief. The top layer of the Visco-Foam Cushion responds to body temperature. Temperature-sensitive visco-elastic surface molds to user to relieve pressure. Middle layer of high-density foam adds comfort and prevents bottoming-out. Firm foundation controls sling-seat hammocking and distributes weight. Fluid-proof Low-Shear II cover prevents skin-damaging friction and shear. Safety strap keeps cushion securely in place. New anti-slip bottom for added user safety. The top layer of temperature-sensitive visco-elastic foam molds to your patient to decrease pressure and increase comfort.