I have several backpacks and a briefcase for work. I have one backpack for hiking. It's a considerable size because I need to put many things in this backpack, for example, tools, food, water, a tent, if necessary. I also have a portfolio that I use for work because I am an architect by training, so I always have several projects with me. And the last backpack I bought seems to be on the recommendation of a friend on a service called Backpacks Global. To be honest, I don't know why I did it. It was necessary. I rarely use it Well, somehow, maybe someone found this information interesting.