These balls are crazy! Superb bounce that will knock you out if you aren't careful. Our medicine ball routine will give you the quick stretch reflex and resistance you always wanted.
Elysia Tsai, M.Ed, ATC is a Certified Athletic Trainer and the developer of Si Boards balance boards, unbreakable med balls and power rope balls. Our balance boards are the most versatile and progressive multi-direction training system. Our high performance products are made in the USA with superior function, quality and lasting value. We are always available to answer your questions.