I LOVE this bag more than I imagined I would.  Heavy canvas. Amazing leather detail.  I also LOVE the zipper access on the part of the bag facing your body.  When you open the package it just smells well made.  When I ordered this bag I could not get a a good idea of the size.  This bag would NOT work for a laptop and a bunch of school books.  This is fortunate because I didn't want it for that purpose.  I have a Surface Pro 4 and it would barely fit in this bag while in a protective case. I am also a college student, a large college text book could potentially be wedged in here, not easily and not with much else.  Please see the pictures to get an idea of the size. Great bag for a weekend adventure, great for the essentials. I love the quality, the style, the details.  Fantastic bag!