An ideal wallet for travelers, the Big Skinny World bi-fold wallet features an extra-wide, extra-tall billfold area that accommodates larger international currency. Almost a perfect 4 x 4-inch square, the World holds up to 30 cards yet retains its ultra-thin profile. It also features six card pockets, two extra-large hidden pockets, and an ID pocket with a clear plastic window for easy access to your driver's license or work badge. 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 World wallet measures 4-1/4 x 4 inches. 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.