Quick Answer: The Porter 46 suits travelers who want a large, structured main compartment and backpack carry without moving to wheeled luggage. Its biggest strength—space—also creates its main risk: packing beyond a comfortable or airline-friendly load.This guide is written for a traveler considering a high-capacity carry-on-style backpack. Browse current options in the Osprey Backpacks collection.As an Amazon Associate, we may earn from qualifying purchases.Compare...