Despite its ultra-compact design, the sleek, slim and light Super Skinny bi-fold wallet from Big Skinny can carry all that you need in your day-to-day life -- up to 30 full-size plastic cards plus space for cash. It features four card pockets (which includes one hidden pocket), an ID pocket with a clear plastic window for easy access to your driver's license or work badge and a full-size, extra-tall 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 Super Skinny wallet measures 5-1/8 x 3-5/8 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.