Develop pitching control with this Champion Sports Weighted Baseball Set. This four-ball set features progressively weighted baseballs, ranging from 9 to 12 ounces, allowing pitchers to comfortably increase weight as your arm strengthens. Each ball boasts a unique, eye-catching color, making weight identification a snap during training. Plus, the set includes a convenient nylon carrying case for organized transport to and from the field. Now, your pitchers can unleash power with confidence, backed by the power of progressive training.