The PowerNet Core Set of Weighted Baseballs contains what you need to improve efficiency of movement and adapt to greater force. Included is 4 Weighted Baseballs in 4 unique colors, as well as a standard baseball. With the included downloadable guide, these are the tools youll use for training and improving arm fitness for throwing and pitching.

• RUN AND FIRE; The heavier baseballs help build arm strength and create better arm action; The lighter baseballs help build fast twitch muscles
• ARM STRENGTH ARM ACTION; Throw harder with more accuracy
• FIVE PIECE SET; 3, 4, 5.25, 6, 7oz - Core set for completing the included Weighted Ball Run and Fire Program and a variety of other drills
• DURABLE; Tough, synthetic leather in colors that are easy to identify and find; NOTE: These balls are for throwing only; Batting can damage the ball and your bat
• GUIDE INCLUDED; Training guide written in collaboration with pro baseball pitchers exclusively for PowerNet, the guide outlines a program that can be done in-season or year-round