In Japan, this product gained attention when pitcher Shota Imanaga used it. The KINETIC ARM, featuring MUSCLEWEB™ TECHNOLOGY, provides optimal support to reduce stress on the shoulder and elbow during pitching practice in baseball and softball. - Brand: THE PERFECT ARM LLC - Model: KINETIC ARM - Technology: MUSCLEWEB™ TECHNOLOGY - Designed for: Baseball, softball, football, and all throwing/swinging sports - Included: Fitting instructions, net bag - Size: Right-handed Size S Adjustable Thank you for viewing. Size S is suitable for individuals approximately 160cm to 178cm tall and weighing approximately 50kg to 73kg. As shown in the images, all accessories are included, and a spare adjustment strap is also provided. The item was only tried on and has not been used, so it is practically new and has been stored carefully. It is said to be effective for high-load training such as pull-downs.