Lightweight, durable, and loaded with travel-specific features, the Osprey Fairview 40L Backpack is our go-to pack when we're traveling light. The smallest pack in the women's Fairview series, the 40-liter size is carry-on compliant on most flights and features a women-specific fit for comfort. It also features a large panel zip access to the main compartment with lockable sliders--and pretty much every pocket we can imagine! That includes dual mesh pockets for bottles and quick stowables, a top zippered liquids pocket, a large zippered lower compartment, a zippered front panel stash pocket, an integrated sleeve for a laptop or tablet, and an internal front flap zippered mesh pocket. That lets us stash our life on our back for a wild weekend or an epic escape to somewhere exotic.