You can see the photos of each side of the unit, there remains some space, enough to drag a bauble, a packet of tissues or otherwise.
But in truth, to slide trinkets, tissue packs, cables, charger, book, tablet, passport etc, there is plenty of pockets! And lots of room!
Indeed, we will not put a bottle of water 1.5l. Anyway, we saw more clever than put a water bottle in a bag with electronic devices. We are not put several goals professional size. But this is not the intended audience for this bag.
This bag is perfect for walking, when you do not want to bother with the camera and the bag simultaneously.
Even if it is not careful, it puts no problem 0,5l bottle in the top compartment. The tilting pocket itself is equipped with a zipper to drag any object menu. A passport is not sent.
The only downside I found this bag is that when worn on the back of a traditional way, you can safely open the swinging pocket and take the camera ... So a large city, it is better the focus on the belly ... But ride too, to get out the camera speed. And put the bag (super light!) On the back when you want to keep the device slung ...
In short, this is the bag I expected!