The folder is folded in half. A playing card (any card) is placed between both sections of the folder and then pushed downwards.
The spectators clearly see the card penetrating right through the solid acetate material coming out at the base. The great feature here is that the audience can see the card being pushed through, thanks to the bands of clear acetate. It’s very visual.
Supplied complete with the special folder, a card (you can use any card) and instructions by Ian Adair.