Orthopedic Customized Posture Support - Back Pain Relief Car Seat Lumbar Cushion New No flaws No smoking No pets in the boutique Designed to fit the carseats of most Cars, SUVs, and Trucks. Customizes ordinary car seats to each individual's back contour. Pre-inflated air pockets inside the Lumbar Support Cushion fills the gap between the back & the seat. Absorbs some of the vibration generated by the car tires and the road surface. Designed to prevent and relieve back pain. Maintains a healthy S-shape curve of the spine at all times. Our seat cushion is adjustable in length. Simple and easy to install.