Spin-Lines Soft Striped 11" Throwing Practice Ball (DZ)
SPIN-LINE balls are the ideal tool for individual training and by the dozen for team, academy, camp, clinic and PE class instruction. SPIN-LINE is thrown to create and visually measure four seam rotation and spin direction making training purposeful and fun and concurrently correcting throwing mechanics.
• Composite Material Cover
• Sponge Rubber Center
• Perfect Tool for Teaching Proper Pitching & Overhand Throwing Mechanics
• Soft Compression for Indoor Use
• More Safely Advance Throwing Skills of Visual Learners & Younger Players