The ProsourceFit Tread Slam Medicine Balls are a fun way to boost your heart rate, get a full body workout and beat stress! A thick, durable rubber shell is built to take a beating from ball slams, wall throws, tossing with a partner and more. These explosive exercises are a great way to strengthen the core, arms, back and legs, as well as improve overall coordination. The tire tread-like surface on the Tread Slam Ball is ideal for intense, sweaty workouts and even more traction for throwing. The sand-filled dead weight ball means there is no bounce when you throw, so you can slam as hard as you can without it flying back or rolling away. Perfect for a heart-pumping workout and stress reliever. Use for powerful, dynamic exercises like overhead slams, rotational wall throws and wall balls. Or use in place of weights for muscle-building exercises like Russian twists, squats, lunges, overhead presses and more. Fitness weight balls come in various weights, making them perfect for beginners and advanced athletes alike. Use weighted fitness balls in your home gym, athletic training facilities, or outdoors for a slammin’ workout!