Great for adding extra resistance to workouts, the anti burst Slam Ball builds explosive power with its dead bounce and versatility. The slam ball is a no-bounce design and is for repeated slamming on solid surfaces. These are used for any Cross Fit Training, boot camp, gym.  Also ideal for use as part of an ab workout and many other exercises. Each ball is sand-filled and keeps the ball from bouncing and rolling around during use. All Personal Trainers use these balls as part of Core Strengthening. It is very durable with a high latex high-density coverand and is an excellent addition to any all over body high-intensity workout. Available in the following weights: 3kg, 4kg, 5kg, 8kg, 10kg, 12kg, 15kg, 20kg, 25kg, 30kg, 35kg, 40kg