Medic Air Lumbar Roll Recreation and Exercise s proprietary Size Guide marking Ships via truck s proprietary Size Guide marking system prevents mis cuffing * Quick release luer slip connector * Complete with leatherette carrying case with self repairing nylon zipper * Assembled inspected and packaged in the U Patented Duplex aircell system to enhance circulation and reduce swelling * Universal semi rigid shells prevent further injury while allowing normal ambulation * Pre Inflated aircell and adjustable heel pad for easy fit * Indications: Ankle sprain & chronic ankle instability * 20 x 8 * Air filled lumbar roll adjusts to shape of back and chair * Portable includes carry case and adjustable positioning strap * Guaranteed for one year * Notice to California Consumers: WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm *