Offering the best features of a bi-fold and a tri-fold wallet, the l-fold PASS case wallet from Big Skinny features a quick flip flap for access to your most needed cards. This version of the l-fold PASS case features an exterior constructed of top grain cowhide leather and an interior made of Big Skinny ultra-thin nylon microfiber material to help keep it thinner than a typical wallet. It can hold more than 25 cards, and it features five extra-wide card pockets, two oversized hidden storage pockets, a full-sized, extra tall billfold area, and two ID pockets with clear plastic windows for easy access to your driver's license and work badge. The extra-wide pockets are lined with a rubbery coating to prevent cards from slipping out. The l-fold PASS case wallet measures 4-1/3 x 3-1/4 inches (and 6 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.