I for more than 3 months used the bag now a day in the university. The shoulder I have never installed. Bag is perfect for laptop, smaller ring binders, pens, block and 1-2 books. I myself am surprised that all fit in. Charging cable and external battery I have also always present and are always stashed perfect.
Small drawback but no rating trigger value: The Mean Amazon BasicLogo, comes after a period away, It is made of rubber, sewn, and travels to a certain time away. But who cares because the logo without residue is simply gone.
Very satisfied. Strong buy recommendation !!!