Seat Cushion - Australia's Original Coccyx Seat Cushion store, with trusted product quality and customer service. Our range of seat cushions are designed to help reduce lower back pain and sciatica, and improve posture by providing maximum support and comfort. Our products include: donut cushions, coccyx cushion, and ergonomic memory foam seat lumbar cushions. Whether you are working in the office, just sitting at home, or driving, we've got you covered. Our seat cushions help to resolve all the complaints associated with these issues and more.