【Comfortable Sitting】 This donut cushion is designed to distribute body pressure, maintaining comfort even during prolonged sitting. It's especially designed to avoid putting pressure on the prostate, and I purchased it to prevent prostatitis. 【High-Quality Materials】 The cover is a blend of polyester and cotton, which is soft and feels good against the skin. The filling is made of polyethylene, providing elasticity. 【Size and Design】 With a diameter of approximately 35cm, it fits any chair. It features a cute design. - Height: Approximately 4-5cm at the highest point, flat in the center. - Diameter: Approximately 35cm - Materials: Cover: 70% polyester, 30% cotton, Filling: Polyethylene (Tenpearl pieces) This product can be washed completely. Thank you for viewing. Upon close inspection, there are a few small stains. I washed it once, but they didn't come out. Please understand that this is a used item before purchasing.