What is a travel backpack and which size backpack are good for traveling?
A travel backpack is a specialized type of bag which is used for long trips, traveling, and hiking, much more looks like an old school bag has the advantage of being able to zip shoulder trap and hip belts which helps you carry more weight without getting tired. Most travel backpacks are fallen between 30L to 40L range which is good enough to carry all your basic traveling needs no matter how long your trip was. If you are planning for a trip and looking to buy a traveling backpack I would recommend you to go through TopDrawer online store they a huge of traveling and regular usage backpacks.
I think the one that is comfortable for you in the first place and is made of strong and moisture-resistant materials.
Yes, travel backpack should be very useful