Big Skinny Men's Compact Sports Bi-Fold Slim Wallet, Holds Up to 20 Cards Ultra-thin bi-fold wallet with full-size billfold area holds up to 20 plastic cards Extra-wide card pocket, ID pocket (with clear window), and 2 oversized hidden storage pockets Pockets lined with rubbery coating to prevent cards from sliding out Constructed of thin, light, and durable nylon microfiber; machine washable Measures 4-1/2 x 3-1/16 inches