Coccyx seat made of high-quality German memory foam, non-slip cushion, to orthopedic coccyx bones, to relieve pressure on the pelvic area and relieve sciatica pain (navy blue)

SIHOO M102C-M101 Ergonomic Office Chair, Computer High Back Chair with Dual Back Design - Individual Lumbar Pillow, 3D Armrests, Adjustable Headrest and Comfortable Thick Cushion (Black)