Thule's Landmark 40L Travel Pack is a masterclass in packability for road trips and weeklong flights away from home. We like that the women-specific shoulder straps and waist belt tuck away when it's in car trunks or checked in for flights. The 40L main compartment opens wide for easy packing, and there are hidden and quick-access compartments to secure our valuables and let us grab our tickets quickly. This pack is compliant with most airlines so we don't have to check our bags if we don't want to.