Some of Chile's best surf breaks are on the shore of the Atacama, the driest desert in the world. This dual-compartment daypack features a waterproof barrier to protect the main compartment from its outside pocket (meant for a damp wetsuit or drippy waders), with mesh on the outside for drainage and ventilation. The main compartment includes plenty of organizational options for pens, electronics, keys and phone, along with a padded sleeve that's raised to protect up to a 17-inch laptop. The sleeve also holds a hydration reservoir (handy in desert environments) and comes equipped with a tube port. Adjustable webbing straps take on a skateboard or bulky clothing, and two stretch pockets keep water bottles at your side. Airflow mesh on the shoulder straps and back panel prevent overheating, compression straps stabilize the load, and the sternum strap has a built-in emergency whistle. 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.