Thank you for viewing! This round cushion provides comfortable seating. It comes with a dedicated fleece cover for cleanliness. - Product Name: Okamoto Round Rubber Cushion - Size: L (Outer diameter 40.5cm) - Cover: Comes with a dedicated cover It has various uses, such as for long hours of desk work, hemorrhoids, postpartum care, and home use. You can adjust the thickness to your liking by inflating it. ※ The round cushion in the image is a sample. The product you will receive is unopened! If you have any questions, please ask in the comments.