The Protekt O2 Wheelchair Cushion Is An Excellent Choice For The Prevention And Treatment Of Pressure Sores * The Soft Interconnected Air Cells Allow For Deep Immersion Providing Constant Low Pressure Across The Entire Seating Surface * Adjustable 4 High Air Cells Offers Deep Immersion To Provide Excellent Pressure Redistribution For Tissue Protection And Treatment * Dual Valve Compartments Address Seating Challenges Such As Pelvic Obliquities Sacral Seating And Enhances Posture Control * Both Compartments Can Be Adjusted Independently To Increase Positioning And Stability For Side To Side Control * Nylon Breathable Cover With Non-skid Bottom And Safety Straps * Easy To Use Hand Held Inflation Pump * Flame Resistant Latex Free Neoprene * Patch Kit Included * Weight Capacity: 500 Lbs * Warranty: 5 Year Non-prorated