Through a unique system of adjustable inserts, polyurethane foam conforms to the shape of your body and helps reduce back strain and fatigue. Cushion can be used on the chair seat or chair back. Attach by hook-and-loop strips and/or the included elastic strap. The cover is washable. Packaged Quantity: 1 Each Product Type: Backrest Adjustment: - Strap Compatibility: Office Chair Mount Type: Hook - loop strips Features: Washable - Cover Color: Gray Material: Polyurethane Dimensions: 17" Height x 17.50" Width x 2.75" Depth Additional Information: Designed and tested by a leading orthopedic specialist Helps reduce back strain and fatigue The only cushions on the market that allow the user to adjust their shape and their thickness Velcro strips hold cushions in place on fabric covered seating Adjustable strap provided for smooth surface seating Ideal for use in the office, home or automobile Unique, patented system of self-adjustable foam inserts provides "personalized" comfort and support for all types of seating Recycled: No Recycled Content: 0% Post-consumer-waste%: 0% Assembly Required: No