These are specially manufactured cards that are ideal for card manipulation routines such as cards-from-air productions and are best suited for stage performances.
These cards are printed on a special type of paper that is very flexible to facilitate easier production for the cards. The back of the cards are painted brown to make the cards easier to conceal. The cards are thinner so that you can now hide in your hands twice as many of these special manipulation cards than you could do with regular cards.
The faces of these cards are slightly different from regular cards and you may not be able to use them in a close-up routines where the cards are subject to closer inspection.
If you are a card person or do card manipulations then this deck of manipulation cards will be very helpful to you.