A donut-shaped cushion made of soft fabric for pelvic and posture correction. - Color: Beige - Shape: Donut - Material: Soft fabric - Purpose: For pelvic and posture correction Thank you for looking. I bought this for about 4,000 yen last year, but I've only used it a few times. It fits my hips a little too snugly, and I feel it's a bit small, so I'm selling it. However, I think that snug fit is necessary for correction.