**Feature** Classic double-fold-over design with full-sized billfold area ID pocket with clear window; 4 credit card pockets; 2 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 3 x 4-1/8 Inch Perfect for those on the go who want to keep down the bulk， the Compact Sports bi-fold wallet offers a thin profile that still can carry all your necessary cards and cash. Despite its compact size， it can hold 20 plastic cards in its extra-wide card pocket， ID pocket (with clear window) and two oversized hidden storage pockets. It also features a full-sized billfold area. The extra-wide pockets are lined with a rubbery coating to prevent cards from slipping out. Designed with rounded corners for comfort， it's constructed of a lightweight， water resistant nylon microfiber material that is 5 to 7 times thinner and lighter than leather. It's machine washable for easy care and it dries out in about 20 minutes. The Compact Sports bi-fold wallet measures 4-1/2 x 3-1/16 Inch (and 4 mm thin when empty). The first Big Skinny wallet was designed by Kiril Stefan Alexandrov (the company's founder) because he loathed sitting on a thick， heavy leather wallet. Since creating the original Sport Wallet in 2005 using an advanced nylon micro-fiber material (5 to 7 times thinner than leather)， Big Skinny has added dozens of slim wallet styles for men and women with more on the way.