Knee Wrap Black Neoprene Large 15 17 Sportaid Canes Aluminum Single Rail * Prevents rolling Select Ear:Left Ear Single Rail * Prevents rolling out of bed while providing safety and security for the user * Both models adjust up and down * Security rails are made out of tubular steel and are powder coated in white * Also available for home style adjustable beds (Craftmatic Beds) * Rail Length 18 * Provides a rail on one side of the bed * Will fill any sized home style bed * Product Weight 8 lbs * Rail Height 20 * Weight Capacity 250 lbs * And don't buy from anyone who tells you their's are * Black neoprene provides warmth flexibility and support * Easy application * Excellent adjustability * Measurement is around kneecap * Latex Free * Comes with 1 adjustable velcro strap on top portion (above kneecap) * 15 17 * Excellent Retail Packaging