Choosing a Travel Backpack

Choosing a travel backpack is a topic of several online debates. Here are some of my learnings. The final decision depends on your preferences. Size First, start with the size, usual sizes are around 25L, 45L, 65L. The 25L is OK for a day or two and you can stretch it for a few days. It is almost what a good office backpack looks like. 45L can last for a few week-long urban trips....