Mabis Lumbar Cushions comes in two options to meet your needs. Select between a Full Roll Lumbar Cushion 10-3/4 x 4-3/4 inches or a Half Roll Lumbar Cushion 10-3/4 x 2-3/8 inches. The Mabis Lumbar Cushoins provide lumbar support to help ease lower back pain. Lumbar Back Cushions also promote proper spine alignment. Each Lumbar Back Cushion is made of a firm foam material and includes an elastic strap that secures it in place. The Lumbar Back Half Roll and Lumbar Back Full Roll both come with covers that are machine washable.