Air-Cell High Profile Wheelchair Cushion, High Profile Dry Flotation Positioning and Therapeutic Seat with Cover, 17in (W) x 17in (D) x 4.25in (H) (will fit both 16in and 18in wide wheelchairs). Features interconnected air cells (9 cells (W) x 9 cells (D)) which provide an adjustable, low deformation, counter-pressure environment that assists in healing of ischemic ulcers. Cushion is provided with inflation pump.