Big Skinny RFID Blocking Card Holder Slim Wallet, Holds Up to 25 Cards, Black Sleek wallet with interior pocket for frequently used cards, catch-all accordion pocket for additional cards Exterior ID pocket with a clear window for displaying license or work badge Pockets lined with layer of RFID blocking material & a rubbery coating to prevent cards from sliding out Constructed of thin, light, and durable nylon microfiber; machine washable Measures 4 x 2-3/4 inches