Window Envelope by Nico Guaman

Window Envelope by Nico Guaman
Imagine being able to change a card in a second, in view of the spectators, and being able to give everything to examine!
Imagine being able to change a card in a second, in view of the spectators, and being able to give everything to examine!
Now you can with Window envelope.
Changes of colors, signed cards, appearances, disappearances and everything you can imagine.
Without flaps
without elastics
no magnets
Easy to do.