Carry-on travel is often a headache, but no longer with the Osprey Porter Travel Pack 46. The backpack-style duffel bag can fit in overhead storage or in train cars. It is the largest carry-on compatible bag in the Porter collection and features a stowaway harness for easy carry and transport. It contains a sizeable U-zip panel and lockable zippers for secure travel. The straightjacket design helps compress and secure any load. Also, the bag includes dual internal side pockets for further organization.