Contour Ergonomics Memory Foam Seat Cushion with Cooling Gel Black CE50026Recommended by doctors and orthopaedic specialists, the ergonomic U shape promotes healthy spine alignment and provides lower back and sciatica pain relief. Say goodbye to discomfort with this premium coccyx cushion for tailbone pain and back pain relief. Supports recovery from lower back problems, herniated discs, tailbone injuries, sciatica and other spinal issues. Non slip base stays in place Built in handles for easy transportation Machine