2 main compartments of equal size, one of which can be split in half (Vertical divider) 3 pockets on the outside MADE IN USA! O-rings thru out One 8-inch snap hook is included. It can be used as a briefcase or backpack; both worked nicely. It also has a handle that can be carried vertically, which is very handy on public transit or in any crowded place. The backpack straps can be tucked away. I did not purchase the shoulder strap, but 6 different ones are available for purchase on the website. The bag was used about a dozen times before COVID-19. I have not used it since (no more business travel, for better or worse) It's very handy. I took it on planes as my personal item carry-on. It fits under the seat nicely in a coach (my experience) About 2 pounds 10 ounces