Whether used as a business card holder or a slender wallet, my design approach for this wallet focused on longevity of life. Therefore, I don't use any features that are known to wear out...no flimsy leather panels with nylon linings, no velcro, no zippers, no magnetic closures. This wallet consists of two slotted pockets on one side, and a slightly bellowed pocket on the other that can expand to hold quite a bit of stuff. Rounded corners allow for streamlined comfort. Why, it’s so simple, it’s got only one knot. Stitched by hand by me.