This thing holds more than you would think! It's also made of 500D Mil-Spec Cordura, meaning it will outlast any of those old bil-folds that your dad still carries.
There are two exterior card slots, one on each side, that will hold several cards each and allow quick access to the cards that you use the most. The zipper pocket will also hold additional cards, or cash, or coins, or a spare key, or photographs, or a keychain tool of some sort, or whatever you can think of. It fits great in the front or back pocket of most pants, and also fits great inside of your Stay-Strapped or Beltline Sling.