Feel the burn through your whole body with the Cortex 20kg Slam Ball X Series. Built as an alternative to medicine balls able to withstand strong pounding through a tough workout slam ball exercises are high intensity, full body workouts. The tyre tread grip of the Slam Ball X offers greater traction for easy gripping and reduced free rolling. The result guaranteed safe use in rough and intense workouts. The thicker rubber grip also prolongs the life of the Slam Ball X, making it less susceptible to wear and tear. It is perfect for throwing exercises, with a harder shell than standard medicine balls, great for explosive movements and workouts.