Its a simple concept: You stuff a foam ball (you get 6) into the cannon and slam down on the launch pad as hard as you can! The air shoots the ball up to 30 feet. Reload and fire at will! You can even change the angle of the cannon barrel to improve your aim. The cannon has a suction cup on the bottom so that it will stay put on slick surfaces.
Here’s a little video we made of the cannon in action: