Bilt-Rite 20 x 8 Mutual Elevating Leg Rest - Made of machine washable and dryable polyurethane foam for lasting comfort and support. Bilt-Rite 20 x 8 Mutual Elevating Leg Rest is made of machine washable and dryable polyurethane foam for lasting comfort and support. It eliminates pressure and muscle tension on the lower back. • Material: Polyurethane Foam. • Type: Leg Rest. • Size: 20 x 8 . • Features: Eliminates Pressure Muscle Tension on the Lower Back. • Sold as 1 Each.