The Original Soft Medicine Ball! Dynamax standard medicine balls; range from 4 lbs to 30 lbs;All 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. The durable black and gray casings are another great feature, as they will help your equipment stand up to repeated use; Made in the USA. Racks available, for up to eight balls and for up to sixteen balls; Dynamax delivers 25 years of research and development in every hand-made and superbly constructed product. Features: 14" diameter. 11 weights, from 4 to 30 lbs. Soft-shell construction and balanced, uniform weight make it easy to handle. Filler material provides even weight distribution and helps maintain shape. Black/gray. Designed by coaches.