Black U-shaped cushion with a hole in the center, providing comfortable support with a diameter of approximately 40cm. I purchased it on Rakuten, but haven't used it much and have been storing it. Perhaps because it's recommended by medical institutions, it was a bit pricey, but it seems to be good for prostate protection in men and postpartum care in women. It comes with a belt to prevent the cushion from opening. Compared to other donut cushions, it has a good height and firmness, so you don't have to worry about sinking in completely, and it protects your buttocks and affected area. The fabric is leather, making it easy to clean. Please understand that this item has been stored at home, and those who are sensitive to such things should refrain from purchasing. If you are interested in purchasing, please comment first. "Especially those paying at convenience stores, please comment." - Color: Black - Shape: U-shaped with a central hole - Size: Approximately 40 cm diameter (based on ruler comparison)