The high-density foam retains It's shape even after multiple uses and the removable cover is machine washable. DONUT PILLOW is perfect for preventing pressure on the tailbone and lower extremities. DONUT PILLOW FOR TAILBONE RELIEF features a ring shape that conforms to the lower body contouring and providing natural comfort and support.
eBay
Answer: The BONGFUN donut pillow's "U" shape design provides natural support for the buttocks, effectively reducing hemorrhoid pain, sciatica, and other symptoms. Makes daily activities more manageable and less painful.
eBay