U-shaped pelvic correction cushion made of breathable mesh material. - Color: Black - Shape: U-shaped - Material: Mesh material Thank you for viewing. I used it for about a month after childbirth. Made by IKSTAR, it's a popular item on Amazon and Rakuten. It retails for around 4300 yen. It's a cushion that helps with sitting posture and is recommended. There are no visible stains, but please refrain from purchasing if you are concerned as it is a used item.