This is a shoulder support for tennis from Prince. I bought it new and used it only a few times. Retail price: 6,980 yen ---Product Description--- Prince SU707-165 High Performance Premium Shoulder prince Higt performance shoulder support Made in Japan, black support, size M, provides a comfortable fit. A collaboration between Daiya Industry, a top supporter manufacturer, and Prince. It is a "supporter for players" jointly planned and developed with the concept of "prioritizing performance during exercise while reducing pain." Supports the shoulder with a unique lift-up structure By compressing the shoulder, it enhances the joint's connectivity and stabilizes it. The lift-up belt supports the deltoid and supraspinatus muscles, which control the abduction and external rotation of the arm. It assists with overhead movements such as serves and smashes. The lifting direction can also be adjusted depending on the position of the lift-up belt. ※For both left and right shoulders ★Recommended for those who★ ●Want to hit serves and smashes at a high point while protecting their shoulder ●Want to put it on easily and quickly ●Want to prioritize thinness, lightness, and breathability - Brand: Prince - Size: M - Color: Black - Country of manufacture: Japan