This bag have a lot of compartments after 2 weeks of using it i was surprise to find 2 more. The bag is great but it is heavy yet surprisingly when you put it on your back, its very lite. It is a great bag able to fit 2 college text books in here and it still maintain it's flat/compressed shape like there was nothing in it. It's heavy when you lift/carry it by hand but put it on your back and nothing. Greatly recommended.