Review after several weeks of use: The bag is very large. A 15 inch laptop, chargers and spare batteries, headphones, some books and a water bottle or two are carried easily with plenty of room for other things. The build seems excellent, no loose threads or uneven seams, high quality zippers, the fabric materials of the bag however are a bit strange. The outside of the bag is made of a very sturdy looking soft Cordura fabric (like the Helikon-Tex Bushcraft Haversack that I absolutely love) while the interior and the inside of the front flap are made of a hard, shiny nylon fabric that makes a lot of crinkly noises when rustled. I'm guessing this fabric might be more weather resistant than the soft Cordura, offering the contents of the bag more protection from the elements. Hopefully the annoying noise it makes will reduce after a while. The carrying strap is sturdy, adjusting its length is easy and the whole bag is very comfortable to carry. Overall I am very happy with the bag, -1 star for the annoying sound the interior fabric makes. Had the whole bag been made of 500D Cordura like the Bushcraft Haversack this would absolutely be the best messenger bag out there.