SKLZ Spin Vision Four-Seam Throw Trainer for Baseball Practice (11019) Training Ball voor Sport Honkbal/Softball

The Four-Seam Throw Trainer helps young athletes improve throwing technique by providing instant feedback on revolutions per minute (RPM) and grip guidance. Designed for players 12 and under, this trainer includes two baseballs that match the size and weight of a standard baseball. The striped ball turns purple when thrown with proper form at high RPMs, reinforcing correct arm angles. The white ball features a black rotation guide and raised seams to help players develop a consistent grip and backspin. By building muscle memory through repetition, young athletes can enhance their accuracy and confidence in throwing. Key Features: Instant feedback on rotation and RPM for skill development Striped ball changes color to purple when thrown at high RPMs White ball features a rotation guide and raised seams for grip training Same size and weight as a standard baseball for realistic practice Ideal for athletes 12 and under, making throwing practice fun and effective