As the official choice for the Cross-fit games, these dynamic balls are an exciting new addition to our range, with multiple weight variations to suit any level of training, these balls are a superb, high quality product to get you active and your heart pumping. Dynamax Balls Information: Absorbing impact is a key feature for any medicine ball, and the Dynamax balls are of the highest quality with a very high absorption level. With a choice of 9 weight ranges each ball is designed to absorb high velocity impact to give a vigorous workout. A well developed training program can ensure this medicine ball gives a fun interactive workout which includes core strength, plyometrics and cardio fitness. They are produced in the US from recycled materials and are the first medicine balls on the market with enough padding to be used safely at high velocity.