Underload Training Ball – Lightweight Throwing Aid for Arm Speed and Velocity

Increase your throwing velocity with the Underload Training Ball—a lightweight, baseball-sized tool designed to boost arm speed and improve pitching performance. Made from durable sponge rubber, this training ball is perfect for underload drills that help athletes throw faster and more efficiently.

Whether you're training for baseball, softball, or other throwing sports, this ball helps build arm strength and refine movement patterns. Its lively rebound makes it ideal for use with nets or padded surfaces to keep training safe and effective. Compact and portable, it’s a must-have for serious athletes focused on velocity and control.

Key Benefits:

•             Arm speed training with lightweight design for faster throws

•             Durable sponge rubber construction for repeated use in intense sessions

•             Safe rebound training—use with nets or padded surfaces

•             Baseball-sized and portable for easy use in various throwing drills

•             Pitching velocity improvement through targeted arm strength development

Ideal for athletes, coaches, and trainers looking for a lightweight throwing ball for arm speed, pitching velocity training aid, or durable underload.