NYOrtho Seat Cushion 61 X 46 X 7,6 cm Foam / Gel - EachSeat Cushion NYOrtho 24 W X 18 L X 3 D Inch Foam Gel High density foam surrounds a dual chamber gel pod providing excellent pressure relief and comfort. Low shear, antimicrobial and fire resistant fabric all incorporated into one fluid proof removable cover Slip resistant bottom with hook and loop straps help keep cushion in place. Meets CAL 117 standards 24 inches wide, 18 inches deep and 3 inches thick