Brown Bear 337 marked cards are popular in the middle of Asia, especially frequently used in Uzbekistan, Kyrgyzstan, Kazakhstan and Pakistan. They are plastic material cards with a good feeling of touch, which are also soft and washable. We usually make marks on the back with a big font in the middle or small numbers on the corner. It is better for you to read these marks with IR contact lenses or IR sunglasses. Meanwhile, our company accepts customization of any marked cards!