As you train, gradually increase the weight of the ball as you build strength in your throwing arm. Color coded cover indicates the ball weight. Weighted baseballs are 9in circumference with varying weights. Synthetic cover, red stitching. Weighted core. Size of regulation baseballs are 9 inch and 5 oz.
Awesome weighted ball for training purposes. The lighter ball helps as well as the heavier ball to increase velocity! (Posted on 1/31/14)