HealthSmart Seat-Lift - Deluxe Seat Cushion is a 4" high firm foam cushion with a hardboard insert to provide the ultimate in lift and comfort. The hardboard insert eliminates the "hammock" effect for those sitting in a wheelchair. Ideal for use in wheelchairs, conventional chairs, car, home, or anywhere additional height is needed. Foam meets CAL #117 requirements. Cushion cover is removable with two 5" straps for easy transporting. Color: black leatherette. Size: 16" x 16" x 4"