SKLZ Spin Vision Baseball Size:One Size Molded PE foam keeps you

Molded PE foam keeps you well protected out on the ice

and another perfectly sized for a large water bottle

They have a smooth medium flex

Prizm™ Lens Technology provides the details

and a new tapered fit

SKLZ Spin Vision Baseball Size:One Size Molded PE foam keeps youFocus on the basics and improve your overall throwing technique with these four seam throw trainers. The striped ball turns purple when thrown to give instant feedback on revolutions per minute. Ball will only turn purple when using proper throwing form to promote better arm angles. Color changing design makes practicing the perfect fast ball fun for youth athletes throw after throw. While the white ball features a black rotation guide and raised