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 accordance with the rotation of the ball inside. : It's lighter and more compact than dumbbells or barbells, making it a recommended training tool that's easy to handle. It also quickly loosens up your hands, making it great for warm-ups before sports. : 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 rotation speed to the limit or maintaining the rotation. ※ 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 leaving a review. Please refrain from purchasing if you are nervous as it is stored at home.