The multi-tasking Chacabuco keeps your Monday-through-Friday trappings organized and accessible and, when you make a break for the wide-open spaces, holds a weekend's worth of outdoor gear. This daypack houses everything in two main compartments and has reflective piping for night commutes and an exterior shock cord for additional stowage. The generous main compartment carries most things and comes with a padded sleeve that's raised and holds most 17-inch 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, 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 Air Flow mesh on the back panel and shoulder straps. With a webbing waistbelt, sternum strap (with an emergency whistle) and compression straps to stabilize the load. Made of a 420-denier 100% nylon oxford plain weave, with an 840-denier 100% ballistics nylon bottom. The lining is 200-denier 100% polyester. All fabrics have a Deluge DWR (durable water repellent) finish.