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