Fits 16 - 21 Wide Wheelchairs; 16 High * Perfect Solution For Patients With Mild Positioning Needs * Versatile Back Support System That Improves Patient Comfort And Posture * 1 Thick High Density Foam Pad Provides Optimal Pressure Redistribution * Secures Directly Over Wheelchair Canes For Added Strength Stability And Safety * 5 Adjustment Straps Featured For Multi-purpose Back Support And Customization To Individual Seating Needs * Handy Back Pocket Is Convenient For Carrying Keys Water Bottle Medications Tissues And More * Breathable Cover Is Fluid Resistant And Easy To Clean And Maintain * Cushion Folds With The Wheelchair For Easy Transport And Storage * Meets Flammability Standard Tb117 * Weight Capacity 350 Lbs * Warranty 18 Months