Innovative design and a new concept, maintains the right posture and offers a lower back support. Regular usage prevents any back problems in the future. Easy to fit and great to use and elastic strap secures backrest in place. Very durable and light in weight. A must for people driving long hours and suffering back problems. Can also be used in office chairs, sofas etc. This price is only for one quantity. Breathable mesh allows airflow for cool and comfortable use.