TOTE Oxygen Tank Carrier fits D Cylinder for Wheeled Walker Balance Disks Exercisers 100% cotton covered elastic threads Style:Left Ear 100% cotton covered elastic threads form a continuous spiral * Doesn't stretch lengthwise * Washable autoclavable * 33' (10 meters) roll * Packaged in dispenser box Size Medium Regular * Fits length 13 Patent #6 672 321 * Carrier for D cylinder * Oxygen Cylinder Holder increased mobility and freedom for individuals who are required to use oxygen and a wheeled walker * Secures to the walker with 2 hook and loop fasteners and a safety buckle strap at the top and a centering strap near the bottom of the walker * Convenient pocket for the wrench * Manufactured and sold under U