★ Over 200 units sold, with "likes!" from buyers. The product quality is assured. Please be aware of inferior imitations. ■ Brand new, unused, free shipping, same-day dispatch ■ Size: 5mm diameter, 690mm length, 300g ■ Product Description ・ Can be used for javelin throwing training, checking baseball/softball pitching form, and practicing throwing in other sports. ・ Suitable for training the strength of the whole body, core, and balance because you throw using your whole body. ・ Children can learn the correct way to throw a ball and form while playing. ・ Lightweight, so it's safe, and children can practice pitching for baseball, softball, etc., while playing. ・ To throw straight, the steps leading up to the throw, weight transfer, arm swing, wrist snap, and posture all work together, so it helps with practicing and improving pitching form.