Designed to support the lower back while improving posture, the Perfect Fit Lumbar Support helps to soothe lower spine pressure and promote forward curvature for healthy sitting posture. The contoured design and patented Port and pillar technology encourages the natural curvature of the lower back while ensuring Airflow, minimizing heat & humidity build-up. The dual panels flex inwards with back movements, effectively reducing pressure on the back and spine. The adjustable strap allows it to be affixed easily to the user's chair or car seat. Just clip the straps in place and it will stay put.