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 bottom for extra durability. It features three main cargo compartments: a spacious, top-loading main cargo compartment with a padded computer sleeve for laptops up to 15.6, a rear-facing compartment (with signature zip enclosure) that offers quick and easy access to mobile devices or other medium-sized items, and a small, top-mounted compartment for pens, business cards and more. If all that internal space is not enough, the Zippack has two external pockets for water bottles, digital cameras or other quick-access items, as well as reinforced carabiner patches and nylon straps for attaching things to the outside.