The bag is not big and it does not fit much in, but that was aware when purchasing. I suppose you only to transport blotters in DIN A4, wallet, cell phone and pens. A tablet would also be given a place. It becomes problematic, however, to have transported a 0.5 liter drinks bottle.
only the closing mechanism with magnetic studs bothers me a little.
On the subject of staining: I have ordered the bag in black and was able to light-colored clothes (white shirts, gray jacket) after repeated wear so far not encountered any discoloration.