My netbook (10.5 '') + mouse + cable (loosely fits a large laptop in)
a timer
a thin A4 Leitz folder (but it would even fit in a large, then is less space for other things)
an A4 block
Highlighter and Pen box
Breakfast
and there was still space! In the summer, I could tuck a thin jacket in there.
In the small compartment can hold a variety of things, such as wallet, card case, hand cream, mirror (what woman just so everything needs), chewing gum and so on.
A water bottle and the makeshift umbrella can well accommodate on the side pockets.
Above is still a "sunglass pocket" that I abused for handkerchiefs, mobile phone and keys.
In front there is a kind Spanngurtung where my helmet is super pure clamped when I'm not on the bike.
The nice thing about backpacking is that it does not bulge out so backward and so they do not occur as a schoolchild and be careful that you do not umrammt anyone when turning. ;-) He wears wonderfully pleasant even when he crammed. Whether it survives the durability test, I can not say yet.
Finally, but not the only small drawback: for cycling, I would have still required a buckle that you can do together over his chest.
Ultimately highly recommended as an everyday backpack!