A light and fast travel companion that is ideal for up to a week going business casual or months dirt bagging it on a rail pass in Europe. The strength of this offering is its versatility. Crafty travelers will love the ability to keep their belongings with them in the cabin, while staying organized and highly mobile. Flexibility is the name of the game when it comes to carry options; sport it backpack, shoulder bag, or brief case style. Made with a lightweight yet extremely strong, durable material that was developed by Montbell. The 45L model is sized small enough to be used as carry on luggage for domestic flights. (Depending on size of aircraft, may not fit in the overhead compartment. Contact airline to confirm carry on luggage requirements).