The first thing to consider when choosing a backpack is size. You may be tempted to buy a big backpack: maybe 50-80 liters. This is definitely not what you want. You want to consider packaging as lightweight as possible, surely below 15 kg in your package. The best backpack for travel is probably 30-40 liters, which lets you get everything you need, and stops the packaging of strangers that you rarely use and hurt your back.
The best backpack for travel is also light. Surprisingly, many backpack harnesses and materials are unnecessarily heavy. You need to take into account the durability of the material you are likely to use. Some ultra-light materials can be very durable, but when they are caught in an airport conveyor belt, they are hanging. When you drive, we often weigh more heavier material.
The best backpack for travel must be able to lock. If you have a dual-boot hunt, it's unlikely to be easily locked. You may need another "overbag" to cover and lock flights, left luggage, and if left behind in your hostel or hotel room.
The size and shape of a backpack is probably the most important factor. You can not read a lot of reading to help you do this: you have to try a bag, have some weight and involve a friend or a store employee in order to fit it properly. Hearts may not be located directly on the hips or the breasts. You might think that the length is too long or too short – putting pressure on the wrong place.
At the end of the day, the best travel package to travel around the world is a personal decision, but you can read a lot of study on travel blogs and asking people who have traveled for a long time. There are a lot of people who want to contribute to their travel plans.