Built for the rigors of international traveling, the Osprey Sojourn Porter 46L backpack features high-tenacity and ballistic materials to stand up to abuse on our flights, safaris, penny cab rides, and jeep tours. This carry-on-sized backpack features a large, clamshell opening for easy access to our belongings, which pack in safely, thanks to the bag's padded sidewalls, compression straps, and mesh interior pockets. The middle-sized backpack in the Sojourn Porter line also features the Airscape back panel from Osprey's hiking packs along with a tuckaway waist belt, sternum strap, and shoulder straps to carry our belongings comfortably when we're on foot.