Drive Medical, Seat Cushion Gel-U-Seat Lite 20 W X 18 D X 3 H Inch Foam / Gel, 1 EachProduct Description A specifically designed pressure reducing cushion to assist in the prevention and healing of pressure ulcers High density foam encapsulates a dual chamber gel bladder that prevents migration Cover is low shear and waterproof Product Benefits Ingredients Suggestions Special Note Warnings Cancer and Reproductive Harm. California Proposition 65 WARNING Some products on this website contains progesterone, a chemical known to the State