Ships immediately ★ Free shipping ★ No comments needed ★ This is a powerball, perfect for strengthening wrists, fingers, and grip. 【Product Details】 : You can focus on training your hands by swinging your wrist in time with the rotation of the ball inside. : It's lighter and more compact than dumbbells or barbells, making it a great and easy-to-use training tool. It's also great for warming up your hands before sports in a short amount of time. : The appeal is that you can train while minimizing the risk of physical strain and injury. You can enjoy training in a game-like manner by increasing the number of rotations to the limit or keeping the rotation going. ※ This is an imported product from overseas. We inspect the product, but please understand that there may be some products with lower quality compared to Japanese products. Also, please note that we cannot accept returns due to size differences or differences in image. If there is a defective product, please contact us via the transaction message before giving a rating. Please refrain from purchasing if you are nervous as it is stored at home.