These contoured lumbar supports have all the benefits of the regular lumbar supports with a contour shape to hug the back, All the lumbar supports include an adjustable strap for easy attachment to user"s chair or car seat, Easily attachable the BifomPad provides multi-density lumbar cushioning for lateral support of the lower back, Supportive Polyurethane foam, Premium Polysuede Fabric, Dimensions: 13 Inch H x 6 Inch W x 3 Inch D SKU: JBR036