This wedge-shaped cushion raises you up 3" in height to help you easily see over the steering wheel. Reduces strain on your back and neck and helps improve your posture. Fits comfortably on any seat and retains its shape after long periods of use. Cover is removable for machine washing. Cotton, polyester and polyurethane. 15 1/2"L x 11 3/4"W x 2 1/2"H.