This is the one! These Osprey Porter 46L backbacks held all of our gear for 1 year around the world.
They lasted through airports, ferries, trains, and even the back of a motorbike. The two key elements that made me feel like a organized and sane person (instead of a "filthy backpacker") were the fact that
- The bag had a computer organization area
- The bag zipped all the way open
That made all the difference in the world!