What to look for in a carry-on backpack? Below are some points we need to consider.
When we are buying a backpack, firstly, we should look for a backpack with a comfortable belt and a supporting belt, if the shoulder belt is strong enough and substainable. Secondly, usually the carry on backpack should has a rain cover, which can prevent moisture to our backpack during rainy weather.
Thirdly, look for the back panel, see if it's well padded and comfortable to carry on our back.
Most importantly, look for the size of the backpack on the label to check whether it fits the standard carry-on luggage bag size of the airline you usually fly on. Different airlines may have more or less different restrictions. Backpack sizes are almost always listed in liters, which will help you estimate how much you can hold. A suitable size is a 35-liter or 40-liter carry-on backpack.