Based on vintage European military map cases and U.S. Engineer Bags, the Mapcase is the ideal city bag featuring a heavy-duty expanding side zipper that holds and hides the shoulder strap. The removable weather flap also hides a passport pocket and a waterproof zipper for fast, direct access. Three bags in one, the removable flap and customizable handles can turn the bag into a handheld portfolio, shoulder tote, or an informal backpack if necessary. Holds up to a 15" laptop.