?Ergonomic Design?- Ergonomic concave design made from Memory Foam - fits the contour of legs,relieves pressure, increase blood flow, shapes buttock, reduce back pain. ?Breathable Design?- Carttiya coccyx cushion with a hollow ventilation center to prevent the spread of bacteria, is the best option for people with hemorrhoids, prostatitis problems and pregnant women, even in summer it will not be hot. ?Unique Rear Tail Protection?- The Carttiya seat cushion heightened end supports, alleviating pressure in strategic areas surrounding the sciatic nerve. Improve chronic and acute pain and help the child develop a correct posture, avoide hump. ?Durable Removable Cover?- Non slippling and breathable - features a non-slip bottom to keep cushion in place. Zippered cover is washable to ensure sanitary and long term enjoyability. ?Wide Range Appliction?- This seat pad is suitable for office chair, car seat, wheelchair, any chair at home or at the seat in a bus, plane or train. Best for office worker, car/bus driver, teachers, students, wheelchair users, pregnant women, office workers, etc. Othologics Seat Cushion Pillow for - Coccyx, Sciatica, Hemorrhoid, Piles, Tailbone, Buttock, Back Pain, Pregnancy, Post Surgery Relief, Ergonomic Posture, - Suitable for Office , Wheelchair , Car Seats, Recliners, Kitchen Chairs