Wagan Ortho Wedge Cushion is an orthopedically designed wedge shape to better spine alignment. The cutout section relieves painful pressure on the tailbone. It is made of durable polyurethane foam with a removable, machine washable velour cover. Unlike ordinary cushions, it takes the pressure off vulnerable areas of the back, seat and legs by suspending the tailbone in an orthopedic cut-out, while tipping the pelvis forward. While positioning the spine in a natural lumbar curve, the wedge also protects lower spinal discs from stressful compression, alleviating lower back pain.