Air Stirrup Universal Stainless Steel Goniometers Designed for long term users MSHQ BH190XL Designed for long term users of wheelchairs * Provides comfort for an entire seat or chair with soft comfortable covoluted foam and ties to secure it * Seat size is 18 W x 16 D X 4 H Back Size is 18 16 x 3 * Helps promote good posture while cushioning the body preventing sores and offering a slip free seat This smart activity tracker helps you keep track of health and work at the same time for a well balanced life style 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 *