Big Skinny Men's RFID Blocking Slimline Bi-Fold Wallet, Black Perfectly balanced bi-fold wallet with enough space for your most important cards Full-sized billfold area, 4 card pockets, 2 hidden pockets, 1 clear plastic ID pocket 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 4-1/2 x 3-3/8 inches