The Patagonia Black Hole 12L Messenger Bag is highly water-resistant, superdurable and designed to carry the essentials whether you're traveling via bike, rails or plane. The top flap opens to exposethe main compartment, which holds the bulkier items—rain shell, paperwork snacks. A padded sleeve inside accommodates most 13" laptops and tablets to keep them protected from the wear and tear of going places. Interior mesh pockets, including a stealthy zippered pocket, provide a secure location forpens, passport, lunch money and the thank-you note to mom you're planning to finish. A handy exterior pocket opens via a moisture-shedding, reverse-coil zipper on the top flap. It even comes with a carrying handle and lash straps to hold a bike lock.