This bag is gargantuan, but it really is a solid bag. I'm a college student and this bag easily fits all of my books, my work uniform, my laptop, etc with room to spare. the main compartment is a drawstring closure, but the side and front pockets are zipper closures that just have decorative fold-over Velcro flaps. The only negative that I can think of is that if your bag gets too heavy, the straps can dig into your shoulder and become slightly uncomfortable, but other than that this is a really good bag.