Having changed many professional backpacks from well-known brands (Samsonite, Delsey, etc), I can say that this is a very high-quality product with exceptional features. At the price of 55 euros that I bought it, it is undoubtedly a great value for money. It has YKK zippers that work perfectly, a front made of hard quality plastic with a nice texture, many ergonomic compartments, comfortable straps, a soft sweat-resistant back, and it is fully functional for a laptop up to 15.6 inches (the one shown is 14 inches). Internally, all compartments have nice linings, good zippers, good elastic bands, and the laptop compartment has sufficient protective material on all sides. As for waterproofing, I did not have the opportunity to test it, but it seems like it can withstand a little rain. It has a discreet USB charging port and USB type-C port with a cover that completely closes them. Overall, it has simple lines and is overall minimalist. In combination with the hard front that keeps it sturdy, the discreet placement of the brand, the shiny zippers, and the high-quality straps, it seems to be a premium product. It is slim but can fit a lot of things for the professional. The downside is that the main compartment does not open fully, but with its good design, it is not bothersome. On a daily basis, I carry: 1 14-inch laptop, 2 mobile phones, a laptop charger with a long cable, a mobile charger, a smartwatch charger, USB and USB type-C cables, a notebook, cards, masks, a small computer, keys, wet wipes, tissues, a nylon bag, a full-size mouse, Bluetooth earphones with a charger, cable earphones, a 10000mAh power bank, a folder with professional brochures, various A4 documents, 2 USB memory sticks, 7-8 pens, 2-3 pencils, a small ruler, an eraser, and a 500ml water bottle. If needed, it can still fit 1 sandwich and 1 folding umbrella. With this load, the bag is at 100%+ capacity. It does not stand easily upright unless it is fully loaded. The straps have enough material, good geometry, and do not slip on the shoulders while walking, although it does not have a front buckle. The soft back and its size are ideal for my height (1.87m) and do not tire me, but in the summer, I wanted a material that provides more ventilation. I will come back with an update after a few months of use to comment on its durability.