The brand is a guarantee of quality. The design is very functional. I like messenger bags because they hang better, more comfortably, than conventional shoulder bags. The buckle that allows to extend the band to take the bag off you is a clever thing.
The Napoleon pocket and the outside compartments for tablet + notebook are also convenient.
The buckles for closing the bag looked funny, but they work very well, remain in place keeping the lid/cover in place, and are easy to loose to open it. Made of metal, they will last.
Size information is OK.

Highly recommendable if you need a bag with a civilized appearance you can bike with and/or use as a brief case.