The movement of the Cannon Ball combines offense, defense and concentrating on head movement. Work on controlled, well-timed punches and angles to round out your game. All, genuine leather construction. Cylindrical shape provides smooth, aerodynamic movement and a logical 7.5”x8" target (23.5” circumference). 32” poly/nylon cord (40” total to the bottom of the bag). Weighs approximately 1.5lbs.