Seat cushion reduces pressure on lower spinal cord. Use in the home, office, car, golf cart or wheel-chair. Scientifically designed to relieve and prevent back pain, numb buttocks and other discomforts associated with sitting by raising the tailbone in the air, tipping the pelvis forward and providing excellent seating comfort. Made of highly resilient polyurethane foam. Machine washable velour cover. 1 year limited warranty. Dark Blue.