From reading around on the internet I understand that pannier bags are comfortable to ride long distances with on a bicycle.
In my current rough travel plan I decided I also want to (hitch)hike a large part of the journey, so I would need a regular backpack (±70L).
To keep the costs down I wondered if there's some sort of hybrid pannier bag that not only can be hooked on to a bike, but also to a "body harness" in practice becoming a backpack. I found some hybrids but these are small and have far less volume than a hiking backpack.
So does a system where I can carry multiple pannier bags on my back exist?