Solid Back Insert Wheelchair Cushion 18 x16 x1.25 w Strap Heating Unit Accessories Fits Women's size 10 Men's Nasal Cannulas Fits Women's size 10 Men's 9 * Conforms to Medicare Therapeutic Shoe Bill * Approved extra depth shoe for certain patients with diabetes * Upper constructed of lycra to provide comfort in patients with forefoot deformities or lesions * Firm heel counter to provide stability and comfortable fit * Extra depth concealed in the molded outsole to provide a lower profile and enhanced style * Machine washable * Toe box made of lycra material to stretch over foot deformities such as hammer toes bunions etc * It performs the same big chill as the Glacier Freeze in one small economical unit SOLID SEAT BACK * 18 W x 16 D x 1 1 2 * Custom and bariatric sizes are available * Used to properly align the body as well as to eliminate the sagging effect found in standard sling seat wheelchair upholstery * Safety straps secure the solid back to the wheelchair * Cushion uses medium density foam and is covered using waterproof black leatherette cover