Eagle Creek Rincon 65L Travel Pack
This bag was designed for the adventurous. With its 65L carrying capacity, it's big enough to carry the gear you need for a multi-day hiking trip, yet it also adheres to most airline carry-on requirements. (So you’ll get bonus city-to-city use when you’re not on the trail.) A detachable daypack zips to the front of the main compartment, meaning you can easily leave the larger piece at your campsite and take off on shorter day hikes.