After 2 more weeks of traveling, where my backpack has accompanied every day, I can say that it delivers what it promises. The biggest advantage is the low weight. The manufacturer has recognized careful to use lightweight materials in every detail. Nevertheless, I have been able to detect any shortcomings in durability. Another advantage is the presence of a lockable zippered outside pocket, which is well suited for camera and accessories or things that you want to have fast access frequently. Before that there is still an adjustable and elastic, open-topped bag that is suitable for about bicycle helmet or wet bathing suits. Access to the inner compartment from the bottom and a sufficiently large zip pocket on the waist belt round off the overall successful backpack. The new back ventilation system works. The only slight drawback is the lack of rain cover. Here I just use the next shell of my old backpack. Otherwise, you will be able to obtain a universal shell.