YOU HAVE 4 COLOR CARDS ON A DISPLAY AND 4 COLOR RIBBONS THAT MATCH THE CARDS ON ANOTHER DISPLAY, YOU TURN YOUR BACK AND LET SOMEONE PICK ONE OF THE CARDS,THEN YOU TURN AROUND AND PICK UP THE DISPLAY THAT HAS THE RIBBONS ON IT AND THE COLOR CLOTH PIN WILL POT OFF THE DISPLAY THAT MATCHES THE CARD THAT THE PERSON PICK . GREAT TRICK