The Original Soft Medicine Ball, the Dynamax Standard, is trusted worldwide for safe, effective training. Ranging from 4 lbs to 30 lbs, every ball measures 14" in diameter, is moisture resistant, and made from 70% post-consumer recycled materials. Each ball is designed to stay dimensionally stable and balanced, with a soft feel that absorbs high-velocity impact for vigorous, joint-friendly workouts. The durable black and gray shell stands up to repeated use, whether at home, in the gym, or with a partner. Easy to catch, throw, and control, the 4 lb medicine ball adds variety to core, strength, and balance routines. Its non-bouncing design keeps it in place, helping you stay focused while training smarter. Made in the USA with craftsmanship that ensures consistent performance, this weighted exercise ball is built for both fun and serious fitness.