I have a bunch of cards (Medicare, military ID, credit cards, immunization records, blah blah blah) so I needed something that wasn't too bulky but also gave me easy access to everything, especially my DL. It fit the bill; fits in my jeans pocket, cards are easy to identify and access (unlike plastic sleeves). Also, I prefer a zipper over a zipper as there is no chance of it snagging and popping open when I put it back in my bag.