Champro Underload Training Set

The Champro Underload Training Set builds arm speed and throwing velocity by training the arm with lighter-than-regulation baseballs. Underload work — throwing balls lighter than a standard 5 oz baseball — trains the arm to move faster through the throwing motion, a proven complement to weighted (overload) balls in a complete velocity program. Each ball carries a striped pattern so coaches can monitor pitch rotation and read spin on every throw, and the durable Durahide cover holds up to high-volume bullpen and long-toss work. The graduated 3 oz, 4 oz, and 6 oz weights let athletes progress through a structured throwing routine.

Key features & specs:

• 3-ball underload set: 3 oz, 4 oz, and 6 oz
• Lighter-than-regulation weights build arm speed and velocity
• Striped pattern for monitoring pitch rotation
• Durable Durahide cover for high-volume use
• Pairs with overload/weighted-ball training
• Suited for pitchers developing velocity

Coach's tip: Combine underload and overload throws in a supervised program, and always warm up fully to protect developing arms. Care: Wipe clean, store dry, and inspect covers periodically for wear.