Develop strength and extension through the hitting zone while providing instant feedback for the hitter. Perfectly weighted by design, Total Control Balls are used for optimum resistance to develop slow-twitch and fast-twitch muscles. Optimum use with front toss, but can be used for side toss and tee work. Features Size: 3.2" in diameter. Weight: 425 grams (14.9 oz.) Instant Feedback Limited Space Required Perfect Weighted Design Long Lasting and Washable Soft Toss Without Net Safe for All Bats No Glove Required in two sizes, your choice of six or twelve balls to a package.