This bag is large enough to hold A4-sized documents and has a good amount of depth, making it perfect for work. It closes with a zipper, so you don't have to worry about the contents of your bag being visible. It can be worn over the shoulder, making it easy to carry even on days when you have a lot of things to carry. The shoulder strap can be adjusted to three different lengths with a belt. It also has multiple functional pockets. Although it is new and unused, if you have any concerns, please feel free to ask. I can provide detailed photos, etc.