Medicine Balls are versatile tools for complete body workouts. These devices can be used to improve core strength, explosive power, stability, and endurance as well as enhance range of motion, coordination, and flexibility. These durable, hollow medicine balls may be used indoors or out and their bounce make them ideal for wall-related exercises. They retain their shape and are available in 6 color-coded weights ranging from 2 to 12 pounds. The 2 and 4-pound balls are the approximate size of a volleyball; the 6 and 8-pound balls are slightly larger than a volleyball but smaller than a basketball; the 10 and 12-pound balls are the approximate size of a basketball.