Positives: It is really big enough for all my stuff (ie books, folders etc.), a laptop compartment has (for laptops up to 15 inches) and wears really enjoyable. I was skeptical at first, but he is well padded. The closures are magnetic - so really extremely strong and can be opened well and close. For water resistance I can not say anything yet, but everything made a good impression as far.
Negatives: There is only one large compartment - is not really bad, but it should be said. In itself is enough space. What I would also point out negative, the "cheap" feel and look of the alleged leather buckles. They look real really something cheap from - I can live with that, but on the pictures that is really not to be recognized.
Conclusion: Actually a really good buy, which leaves little to be desired for me. Running or cycling it is comfortable and with 23L is neat place for everything. The design is well thought out, only the cheap look of the leather buckles I would complain about.
Greetings