Big Skinny Men's RFID Blocking World Bi-Fold Slim Wallet with Zippered Pocket, Holds Up to 30 Cards, Black Ultra-thin wallet designed for travelers with extra-tall billfold area to fit larger international currency 6 card pockets, 2 extra-large hidden pockets, 1 clear ID pocket, zippered pocket on back 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 4-1/4 x 4 inches