Dynamax Med BallAll balls are 14 in diameter, moisture resistant, and are made from 70% post consumer recycled materials. The design and construction ensures that they will remain dimensionally stable and balanced. Our trade secret and craftsmanship guarantee that each ball, regardless of weight, has a friendly feel and will absorb high velocity impact, making for a fun and vigorous workout. American Made. Check out our 70" Med Ball Storage rack to keep your