These are new kind of playing cards by Fournier for the World Series of Poker. Made with proprietary materials, each card undergoes a 12 step quality control program. Fournier is well-known in the playing card manufacturing industry for formulating the finest, highest quality professional playing cards. These officially licensed World Series of Poker 100% plastic playing cards would not disappoint you! Our technicians know how to mark the Fournier playing cards well without sacrificing its quality. What amazing us is you can see the markings with infrared contact lense. So you definitely enjoy your games with these marked cards.