Waterproof PU Material: The double PU ID card holder is made of two layers of genuine leather, which is waterproof and wear-resistant. Unique fine grain texture with exquisite workmanship, pure handmade, comfortable hand feeling and excellent texture.Convenient Card Slot: This work card comes with a card slot that is easy to carry and hard to lose. It can be used for ID cards, employee cards, credit cards, student cards, bus cards, membership cards, passports, transport cards, etc.High Permeability PVC Film: The transparent window on the front of the black envelope is made of a high permeability PVC film with uniform thickness, which greatly improves the overall flatness and transparency. The surface is smooth, the hand feels smooth, and the card information is clear at a glance.Metal Hanging Buckle: The hanging buckle is made of high-quality stainless steel, which is exquisite, high-strength, wear-resistant, shiny and durable.Right Lanyard: The right lanyard for each color of the ID card is beautiful, fashionable and comfortable to wear.