Heavy-Duty, Top-Loading, Four-Compartment, Woven Nylon Backpack for Most Laptop Computers Up To 15.6,Green/Black With lots of cargo space, heavy-duty construction and rugged looks, the Zippack backpack from Manhattan is perfectly at home on campus, in the boardroom, flying across continents or hiking the great outdoors. Designed to go wherever and whenever you do, the exterior of this bag is made from water-resistant, heavy-duty nylon and reinforced with a thick, synthetic suede patch on the bot....