Four separate gel-filled chambers guarantee stability Water-based gel relieves pressure and cools the skin to prevent breakdown caused by perspiration Side gel improves lateral stability by controlling left-right leaning High-density foam adds comfort and prevents bottoming out Low-Shear outer cover reduces skin-damaging friction Front gel controls forward sliding by eliminating posterior pelvic rotation Rear gel provides pressure relief in the coccyx area Incontinent-proof vinyl cover prevents urine from entering cushion Wipes clean for easy care Launderable Low-Shear outer cover reduces skin-damaging friction Safety strap keeps cushion in place SpecificationsManufacturer: Skil-Care Application: Seat Cushion Color: Black Cover Material: Vinyl / Low-Shear Cover Inflation Type: Non-inflatable Material: Gel / Foam Securing Method: Safety Strap 1 Each / Each