FeaturesThe GRZ is dynamic adjustable air bladder system consisting of 3 individual air cell chambers which redistribute pressure and adjust to body weight and position Ideal for patients with moderate to high risk of skin breakdown who require significant postural support The GRZ allows the therapist to offer correct posture, proper alignment and trunk stability as well as adjustments for pelvic obliquities Adjustable strap secures cushion to wheelchair Cover is Vyvex-III four-way stretch urethane, low-shear, fluid and stain proof material Does not require pump for adjustment SpecificationsManufacturer Bluechip Medical Application Seat Cushion Cover Material Vyvex III Cover Dimensions 16 X 20 Inch Inflation Type Inflatable Material Air Cells Prop 65 No Securing Method Adjustable Strap Weight Capacity 300 lbs. 1 Each / Each