The Invacare Matrx Flo-tech cushion uses a combination of molded foam and dual layer fluid sacs to provide the highest level of skin protection for users with high risk of skin breakdown. The Fit Kit components are available to address individual postural requirements. Features Outer cover Moisture resistant and breathable. Includes non-slip base, hook and loop fastener strips and a lifting strap. Expandable cover facilitates use with Fit Kit components. Platilon liner An additional layer of moisture protection. Fluid sac Unique dual-layer fluid in ischial/sacral area to help prevent bottoming out. Non-temperature sensitive fluid resists freezing. No kneading or maintenance required. Foam base High quality, comfortable, resilient foam base made with Ultra-Fresh for antibacterial and odor protection. Molded in hook and loop fastener strips for secure attachment of Fit Kit components. Pre-ischial contour,trochanteric support and sacral support. Unique dual layer fluid sacs provide immersion to sensitive bony prominences and prevent bottoming out Comfortable, molded foam base includes pre-ischial contour and trochanteric shelf Moisture resistant inner liner protects foam from moisture Stretchy, water resistant, breathable outer cover. Includes hook and loop fasteners and lifting strap. Expandable cover facilitates uses with Fit Kit components Specifications Seat Width 14 24 Seat Depth 14 21 Heavy Duty 18 20 , 22 Thickness 3. 75 /3. 75 Height Abductor/Adductor 2. 75 Height at Leg Trough Product Weight 7. 2 lb and up Weight Capacity 300 lbs; 500 lbs Heavy Duty Warranty 3 years 1 Each / Each