It can hold upto 200 Lbs weight. Ergonomic Coccyx Cushion: An ergonomic coccyx cushion for tailbone pain with a round, hollowed-out shape that reduces pressure on your tailbone and pelvic area. For Office: Our coccyx, sciatica, and back pain relief tailbone cushion is best for office purposes where you can sit comfortably for as long as you want.