HOW IT WORKS:
Someone secretly writes a 3-digit number on the back of their business card.
Open the wallet and ask the person to place his or her card with the numbers face down with the rest of the cards.
Close the wallet and place it into your pocket.
Instantly be able to tell that person his or her written number.
Works great with numbers states etc.
Easy and deceptive.
4 in. x 2.75 in.