Car Seat Cushions, Seat Cushion, Chair Cushions Pure Posture Avoid PainKeeps bones and joints in the correct alignment so that muscles are being used properly. Helps decrease the abnormal wearing of joint surfaces that could result in arthritis. Decreases the stress on the ligaments holding the joints of the spine together. Prevents the spine from becoming fixed in abnormal positions. Prevents fatigue because muscles are being used more efficiently, allowing the body to use less energy. Prevents strain or overuse