When you are looking for invisible ink sunglasses or luminous sunglasses, you should take us into your consideration. We produce high-quality infrared sunglasses for customer for many years. As we known, once you wearing this kind of luminous ink sunglasses, you can see the markings on the back of the marked playing cards clearly. In addition, our IR contact lenses also can be used to read the marked decks.
If you have such good cheating sunglasses, you can use them to read Fournier marked cards, Copag back marked card, KEM back marked cards and so on. It is convenient enough and safe for you as the appearance of this sunglass is the same as our normal sunglasses which we usually use in our daily life.