15 - 16 Simply clip Retroback onto the existing sling upholstery and lift it off every time a wheelchair needs to be folded or stored. No tools or hardware needed. This rugged back support system weighs only 3 pounds (1 kg) making it easy to attach and remove from a wheelchair. Includes: Cushioned back support pad with attachment clip cover and instruction manual The removable water-resistant cover is made of a flexible durable washable fabric. Clip on and clip off. Improves comfort. Supports posture. Weight Capacity: 300 lbs. 12-month Limited Warranty Medicare Code: E2611 *