EDS Gel Seat Cushion Soft Sitter Non-Slip Honeycomb Design Soft & Breathable Cushion for Back Support Coccyx Pain Relief Cushion for Office Desk, Gamming Chair, Wheelchair & Car Seat. Versatile Coccyx Cushion: The back support for office chair cushion is suitable for various situations, such as office chair, gaming desk, wheelchair use, driving in a car.