【Sciatica & Tailbone Pain Relief】This orthopedic seat cushion relieves pressure on your tailbone, sciatic nerve, and lower back with its ergonomic honeycomb design. 【Non-Slip Gel Cushion for Long Sitting】The extra-thick pressure cushion (3.5cm) provides superior comfort for long sitting sessions, while the non-slip cover ensures stability on any chair, withstands 200kg+ weight without permanent deformation.