Black Core
No matter if you're playing a game or doing a magic trick, the worst that could happen is that your card is revealed. The M31 linen card stock is able to prevent this from happening with its black core layer. Black core is an extra black layer sandwiched right in the middle of the cards, this layer blocks light rays from shining through your cards.
Air Pockets
The card stock has unique air pockets embossed onto the surface of each side. These air pockets are used to transit shock, enabling a smooth handling experience for magician, cardistry enthusiast and regular card game player.