One to on IR sunglasses is a magic marked cards kit, you can use in to see the marked cards in many kinds of poker card games.
As one of the practical marked cards kit, one to one IR sunglasses can help user to see through playing cards very secretly. One to one means that even if others who wearing IR sunglasses will not see through back marked poker cards, only you wearing this magic one to one IR sunglasses can see through them. Why? Because we process this magic one to one sunglasses with the specialized marked cards glasses filter and marking the poker cards with best invisible ink recipe. No matter you use it in what kinds of poker card games, this one to one IR sunglasses kit are in high privacy.
Due to the perfect procession, no one can find any secret from the appearance of this one to one IR sunglasses.