In front is a compartment for pens and so, in the middle of a vergrößerteres tray for paper, and behind the padded compartment for a laptop.
The MacBook I have again in a sleeve from Incase, since the padding rather so-so, and the MacBook has otherwise too much air.
The pocket on the front / bottom is probably intended for power supplies and mice or so. The MacBook power adapter does not fit in there but. I do not know what you can use this, as it is also not a bit padded. If you leave it empty, the space is used by the central compartment.
In addition to this backpack I bought two more, but the other two sent back.
I would buy the backpack again.