Perfectly weighted by design, Total Control Balls are used for optimum resistance to develop slow-twitch and fast-twitch muscles * Smaller version of TCB ball created in response to stronger, more advanced hitters * Features Size: 2.9" 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