I use the bag as a supplement to the normal luggage or at trade fairs. It is so small that it does not interfere when wearing long. At the same time it is also large enough to store all the important documents and equipment. The following matches at the same time without any problem in the bag: iPad Air, smartphone, notebook, pens, cards, money cards, 0.5-liter bottle and chargers for electronic devices. Thanks to the intelligent division into many different subjects you do not lose track and have everything at hand.