The foam Stress Wedge provides an economical option to help improve posture and ease lower back and/or hip pain while sitting. The gentle incline helps restore and maintain correct ergonomic seating by increasing the angle of the hips, helping increase core stability. Firm foam construction without cover. 15 x 10.25 inches with incline from 7/8 to 3 inch height. Use to help relieve stress on the lower back and hips by placing the wedge with the 3 inch rise toward the back of the seating surface. The cushion is lightweight and easy to transfer. It can be used in virtually any location including work, home, in the car or on a plane.