Comfy & Ergonomic Support: Our powder-free high-resilience cushion foam is a leading filling that has excellent resilience and durability and can offer even support. Therefore, the D-shaped chair cushion, 2'' in thickness, can provide a comfy surface and ergonomic support, protecting your tailbone, reducing pressure, and relaxing your muscles. With it, no more hard chair surfaces, and no more constantly adjusting your sitting posture to relieve the stiffness of sitting long. Non-slip Bottom...