McKesson makes sitting more comfortable with this Lumbar Support Cushion. The firm, high-density polyurethane foam cushion provides all-over back support. Side support wings contour to your body shape to help improve seated posture while providing support and extra comfort. The convenient and machine washable nylon cover is blue and measures 13 inches W x 14 inches D. Includes adjustable buckle to fit around chairs and hold cushion in place. Choose this seat cushion for its orthopedic design that may help ease your lower back pain.