Opened for inspection. Please purchase after viewing the photos, as this item is also slightly damaged. It is slightly warped, but I believe it will not affect usage. This item will be sent anonymously. I believe it will not affect usage. Thank you for your understanding. A three-dimensional design that makes it easy to naturally focus on the muscles around the pelvis just by sitting = the bulge in the center gently stimulates the pelvic floor muscles (PC muscles). Simply place it on your usual chair or floor to make your daily "sitting time" a self-care habit. Recommended for those who are concerned about their posture or want to be conscious of their hip line. Can be used during "multi-tasking time" such as desk work, housework, and watching TV. Lightweight and compact, making it easy to use at home or in the office! A self-care item that can be started without special knowledge or skills, even for those who are not good at exercise.