Offering a classic design, the compact and practical Big Skinny Card Case wallet can hold up to 14 plastic cards and it features an ID pocket with a clear plastic window for easy access to your driver's license or work badge. This version of the Card Case features an exterior constructed of top grain cowhide leather and an interior made of Big Skinny's ultra-thin nylon microfiber material to help keep it thinner than a typical wallet. The card pocket can hold up to seven credit cards, while the ID pocket can store another seven cards. The extra-wide interior pocket is lined with a rubbery coating to prevent cards from slipping out. The Card Case wallet measures 4 x 2-3/4 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.