What is the size of the backpack you recommend for a three-week trip to Australia?
I'm going to Australia next week, but I still need a backpack / backpack to carry all my things, I looked at 55 liters, but they seem too large, the fact that anyone have any recommendations?
As small as you can get away with. I learned the hard way that packages Get Heavy. You will need do laundry when there is, in terms it is a little more often. The last time I traveled for three weeks, I took a pack a day instead of a great pack and I've never been happier when you travel. (Of course, I did not have space for my sleeping bag, so I plan my trip, I did not need it.) Try things you think are absolutely necessary in the biggest backpack you have and see how you can adapt in. You do not need a lot of things when you travel. If your backpack is too small, add another to measure the size of the total your luggage and check what you can leave behind.