The apparatus supplied comprises of the specially made "Clatter Box", and two identical silks. In the effect the performer displays a small box. It is opened, and seen to be filled with a large silk. The silk is removed from the box, which is closed and given to a spectator to hold. The silk is now vanished, and the performer claims it will re-appear in the box. The spectator is asked to open the box. However 'when the spectator tries to open the box, it breaks and clatters to the floor in pieces, with the spectator left holding just the top of the box. And attached to the top is the vanished silk.
The effect is an excellent comedy item suitable for kid shows, clown and circus acts, or any magic act with an emphasis on humor.