Big Skinny Men's RFID Blocking Tri-Fold Slim Wallet, Holds Up to 25 Cards, Black Classic double-fold-over design with full-sized billfold area; holds up to 25 cards ID pocket with clear window; 4 credit card pockets; 2 hidden storage pockets 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 3 x 4-1/8 inches