McKesson Back Support Cushion for Office, Home, Travel, Lumbar Support, Foam, 13 2/5 in x 13 in x 4 in, 4 Count

NylonThis McKesson Lumbar Support Cushion is made for home, office, and travel use, adding comfort to your lower backThe cushion features a blue nylon, machine washable cover; support cushion is ideal if you sit for long periods such as during an airplane flightAn adjustable strap keeps the cushion securely in place; lumbar cushion includes side wings to curve to your body for more comfort and supportIt rapidly expands to the full size when removed from the packaging; use it immediately for relief from lower back pain