The Original Soft Medicine Ball – now bigger and heavier! Dynamax Atlas medicine balls; range from 20 lbs to 150 lbs, and are designed for high-intensity weight training. All balls are 22″ 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 casings are another great feature, as they will help your equipment stand up to repeated use;Made in the USA; Dynamax delivers 25 years of research and development in every hand-made and superbly constructed product. Features: 22″ diameter. Perfect for big power movements – not meant for quick, repetitive motions 4 weights, from 50 to 150 lbs. Soft-shell construction and balanced, uniform weight make it easy to handle Filler material provides even weight distribution and helps maintain shape. Designed by coaches.