Big Skinny Men's RFID Blocking World Leather Bi-Fold Slim Wallet, Holds Up to 25 Cards, Black Ultra-thin wallet designed for travelers with extra-tall billfold area 6 card pockets, 2 extra-large hidden pockets, 1 clear ID pocket Pockets lined with layer of RFID blocking material & a rubbery coating to prevent cards from sliding out Constructed of top grain cowhide leather with nylon microfiber interior Measures 4-1/4 x 4 inches