If you want to try on marked cards and contact lenses to get positive energy or just play games for entertainment purpose, or for fear cheated by others, you can get some related products such as marked cards and contact lenses to help.
NTP poker cards is usually used for BLACK JACK in some Europe places. Here we mark the original Italian NTP playing cards with invisible ink by special machine. These marked decks looks like the normal clean ones and people can't see any marks with naked eyes. It works well in the poker games for only you wear the infrared contact lenses can see the secret marks.
Knowing how to cheat with playing cards is very important to enjoy your games, or to protect you from cheated by others. NTP BLACK JACK marked playing cards are good choice with the standard size of 88mm*63mm. These NTP BLACK JACK marked decks are available in blue, red, yellow and green . Just choose the one you like!