The York 4kg (8.8lbs) medicine ball has a 2-tone design and is produced to help you improve flexibility, co-ordination, core strength and agility. It is perfect for rehabilitation, strength training and sports medicine. The rubber compound material enhances durability, whereas the textured surface ensures a firm grip for safe and effective workouts. In addition, this high quality ball is great for exercises such as rock and roll ups, reverse swings, step jumps, circle squats and medicine ball push-ups.