BackDetailsPB Extreme Converta-Balls have a removable rope. Medicine balls with ropes are great for swinging, chopping, slamming and throwing exercises.Take your medicine ball training to the next level with the PB Extreme Converta-Ball Medicine Ball! With its removable rope, the Converta-Ball Medicine Ball is an incredible tool for increasing rotational strength and flexibility, overall upper body and core strength, coordination, balance, and agility.PB Extreme Converta-Balls are designed to withstand even the toughest workouts. The removable rope can be used to slam, chop or throw the ball. Medicine ball exercises using the rope include the side-to-side rotation chop against a wall, the seated wood chop, vertical shoulder rotations, overhead rotation, swinging figure eight, diagonal wood chop, overhead toss and spinning hammer toss. The rope can be easily removed to use the Converta-Ball like a regular medicine ball.Use the rope to slam, chop or throw the ball.Perfect for all rotational medicine ball work.Remove the rope to use as a regular medicine ball.1 kg. and 2 kg. are volleyball size; 3 kg. is basketball size; 4 kg. – 7 kg. Converta-Balls are slightly larger than a basketball.