Get the TopFit Coccyx Orthopedic Comfort Foam Seat Cushion from Amazon for only $20.00. It is made of high quality foam that helps to reduce pressure on the coccyx and tailbone. The TopFit coccyx cushion will provide comfort for a chair, car seat, plane or wheelchair. Free shipping is available on orders of $49 or more or get free 2-day shipping with Prime. Sign up for a free 30 day trial here.