first use survived - disadvantage when traveling by air

I have been looking for a backpack for a Japan holiday, although it is fairly large but still not too high to fit into the web-lockers.
This backpack was not as high as comparable for 80 liters, so I have chosen this.
He has in Japan fitted as desired in a medium sized web-locker and I easily get into it all that I wanted to take.

Practically, I found that the backpack from above and below can be loaded and the main compartment can be divided into 2 areas there. The lower area is well suited for shoes.
Also handy are the many subjects.
However, the side pockets are so narrow that hardly fits something. For the compartment in the lid is very large.

Disturbed me were the many belts. Especially side the only decoration seems to be, because a real benefit they have not. Actually, they only interfere.
The biggest drawback I found that you can not lock the main compartment of the backpack, because it is not closed with zipper. In combination with the whole belt, he is only conditionally recommended for air travel.
Therefore, a point deduction.