The THRO-FAS principle is used by the major leagues, colleges, and baseball players at every age level. THRO-FAS is not a toy. The younger players need THRO-FAS to develop technique, create muscle memory and strengthen the arm. THRO-FAS, used on a regular basis, can bring these results: increased velocity by approximately 3-5 MPH after 6-8 wks, throwing motion should be smoother and more efficient, user should experience a sore arm less frequently due to having strengthened his arm plus having kept the muscles stretched. Comes with exercise examples.
Warranty: 1 YR