What bag will handle torrential Japanese downpours?
I'm a teacher looking for a 100-percent waterproof backpack to use while ferrying from lesson to lesson in Japan. It needs to have a capacity of up to 30 liters, be strong, and be completely waterproof to survive the downpours we get out here. I'm thinking about an Ortlieb Messenger-style bag, but do you have any other possible alternatives? Daniel Hiroshima, Japan