The Chacabuco carries a full quiver of gear when you're traversing a pulsing city or crossing a wind-scoured mountain pass. It houses everything in two main compartments and has an exterior shock cord for additional carrying capacity. The generous main compartment carries the majority of your gear and comes with a raised, padded sleeve sized to hold most 17" laptops. Equipped with a tube port, the sleeve also accepts a hydration reservoir when you leave your laptop at home. A secondary compartment stores everyday necessities like keys, pens and a phone. A zippered outside pocket holds energy bars or small essentials, and a brushed tricot-lined top pocket protects sunglasses or an audio device. Two stretch pockets keep water bottles within reach. The Chacabuco's suspension system uses heat-venting airflow mesh on the back panel and shoulder straps. With a webbing waist belt, sternum strap and compression straps to stabilize the load. Made from 450-denier 100% recycled polyester, with a 450-denier 100% recycled polyester base. The lining is 200-denier 100% polyester. All fabrics have a DWR (durable water repellent) finish.