The Obusforme Lumbar Back Support Cushion Wide Back Support Cushion is extra wide for broader backs. Men's size 44+ and women's 18+. Designed to increase comfort and provide lumbar support by aligning your spine and supporting correct posture. Unlike traditional "L" shaped chair cushions the "S" shaped back support frame of the Obusforme molds your spine into proper anatomical alignment. Muscles relax leaving you more comfortable and energized. Features molded impact resistant, lightweight polycarbonate frame. Durable polyurethane foam backrest cushion protects frame and provides cushy comfort. Hypoallergenic cover can be removed and spot washed. Features a removable, adjustable lumbar support pad to provide additional comfort for the lower back by supporting the lumbar curve together with any Obusforme seat. 22 1/2 " x 19 " x 6 1/2 ".