1. This card sleeve are made by leather. 2. Structure: 1 card slot with key chain and key ring and hollowed-out window the window can reduce obstruct between card and the flash equipment. 3. Design for bus pass card, parking card, timecard and all kinds of non-contact induction card. 4. This little card sleeve can prevent ur card abrasion when long time use. It is small can only out 1 single card on the sleeve, but you can easy to put it on wallet or bag.
