RFID stands for Radio-Frequency Identification. If you have a chip inset in your card, you are at risk of skimmers getting your info when you're shopping or traveling without you ever knowing it. The best way to avoid this is with a shielded wallet or card case. This case is a one-of-a-kind and was made with rose gold metallic leather, hand stitched with green thread, and inside contains RFID shielding. Double pocket holds 4-6 cards depending on thickness.