This device works by wrapping the Yotsuna, which has specially shaped acupressure points, around the base of the thigh to stimulate the psoas major muscle and surrounding fascia, thereby stretching the psoas major. The psoas major is a muscle located deep within the body, making it difficult to stretch on your own. How to Use *While effective when worn over pants, we recommend wrapping it directly around your thigh.* 1. Place the acupressure points on the base of your thigh. 2. Wrap the belt from the inside. 3. Finally, secure it with the hook-and-loop fastener. 4. Use on both sides simultaneously. ●Retail Price: 5,980 yen ●Product Specifications Acupressure points: Silicone rubber (Made in Japan) Belt: Nylon (Made in Taiwan) ●Size: L size (for thighs with a circumference of 60cm or more) This is a beautiful item that has only been used once. I am selling it because it did not feel quite right for me. Thank you for looking.