The tapered 9 degree angle of the Posture Wedge encourages correct pelvic tilt and maintain your normal lumbar curve while sitting, helping relieve stress and pressure on your back thus reducing the incidence of back pain. Compact and lightweight and you can take it anywhere the Posture wedge is perfect at the office, home, or for sports stadium seating. The Posture Wedge is a multi-purpose seat cushion which is normally used with the lower end in front. In the car you have the option of turning it around and it positions you firmly against the back of the seat and prevents you from sliding down and straining the lower back.