This water-repellent, medium-weight backpack is built with oil finish Tin Cloth to protect your gear from rain, sleet and snow, and 2-ply by 3-ply Rugged Twill, an industrial-strength fabric from the iconic British Millerain. The padded shoulder straps are built with Tin Cloth and lined with Moleskin, a sueded cotton which minimizes slipping while improving breathability. The contoured, adjustable straps are secured to the backpack with vegetable-tanned Bridle Leather from Wickett & Craig, the historic Pennsylvania tannery since 1867.  It's spacious main compartment is fully lined and is secured by a solid brass, heavy-gauge YKK® zipper that’s shielded from water by a Tin Cloth flap along its entire length. It extends more than halfway down the bag, for easy access and visibility into the entire backpack. The back panel and attached laptop sleeve easily hold a 15” computer–and both are padded to protect its contents or your back from sharp or bulky loads. The exterior pocket is gusseted with corner snaps, allowing it to remain low-profile or expand to increase capacity. The one-hand-operable snapped pocket flap ensures your quick-access essentials stay dry. Added details such as the grab handle, snapped closure over the main compartment’s rain gutter, and zipper pulls are made from Bridle Leather, rounding out a thoughtfully-designed, well-executed backpack that will provide dependable service for as many miles as you care to walk or ride.