The Rubber Tread Slam Balls are constructed for the highest-level performance, optimizing a full-body workout, and built to perform multiple reps throwing, slamming, or catching the ball. These non-bouncy durable balls are filled with sand to ensure no bounce and absorb impact. The shell is crafted with a high-quality rubber tread pattern that is easy to grip and will prevent blowouts when slammed to the ground. Slam balls are designed to increase muscle mass, enhance cardiovascular endurance, and improve hand-eye coordination while working with a partner. They are also perfect for getting rid of excess energy and pent-up frustration. Utilize this ball for overhead lunges, ball slams, Russian twists, squat throws, or air squats to take your workout to the next level.