Elastic Knee Stabilizer Beige Small 12 13.5 20 30 Thigh High 15 16 * Simply Patient Lifters Slings Parts 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 * Carton Shipping Weight 8 Small * Fits knee circum 5 (measurement taken just under the knee cap while knee is slightly bent) * Elastic Support for Prevention Treatment & Rehabilitation of the knee * Thermoskin elastics can expand contract and stretch and are made of a high grade durable material that permits a full range of movement and are comfortable to wear during a range of activities * Anatomically designed the elastic support will comfortably contour to the shape of your knee * It provides even compression and support to weakened and injured knees * It has side stabilizers to provide increased medial and laterial support