The Rear
The rear of the bag holds nothing much of interest. Because it is a backpack, the requisite straps are there (duh!). What is interesting though is the fact that you can choose to hide the straps inside the bag.
How would you carry the bag if you do that? You just need to attach the supplied shoulder strap and lug it like your usual sling bag. However, I do not recommend this because the bag was not really designed to be carried like this due to its vertical orientation.
When yon lift the flap up, the first thing that greets you is the front mesh pocket. This is meant for unimportant loose items like manuals, sheets of paper, etc., etc. In my bag, I use it to store the cloth I use to clean my Tablet PC's screen.
Right behind the mesh pocket is the front pouch There are two pockets for small accessories like mini USB hubs, PC Cards and sync cables. There are also two small and thin pockets for little things like memory cards. None of these pockets have elastic openings so if you jump around a lot, your things might fall out of these pockets, into the main compartment. How do I know about that? Don't ask! ;)
On the front 'lid' of the pouch is a zippered pocket. It is not meant for anything big but since it is zippered, it is a good place to stow memory cards.
There is also a wide compartment on the rear wall of the pouch. I use it to stow my CDs since it is about the right size. There are also three pen holders and a keychain clip on the back wall.
But I wouldn't put my keys there and here's why.
This is how the front pouch closes. Note how the zipper ends at the side and the top is closed off by velcro. Why such a weird design? This is supposed to be a 'feature' which allows you to quickly release the zipper, reach in and get the stuff from the pouch without lifting up the flap.
Good idea but there is one problem. Easy access for the user also means easy access for thieves! Granted, if someone wanted to steal something bad enough, he would probably do it anyway but we shouldn't make it easier for them.