●Made of molded, highly-resilient foam for firm back support. Size 14" x 13" ●Ergonomic Design for Lower Back Support, promote good posture. Side wings provide extra back support. ●Reacts fast to provide instant relief and comfort. Elastic strap included for chair, car. ●Excellent to be used on hard surfaces, as well as, couches, car seats, airplane seats, sporting events etc.