This is quite a nice bag.  It's very sturdily constructed, has a numerous pockets, a nice roomy main compartment, and looks quite stylish.  I can easily fit my 14" laptop in the main compartment, which also has a smaller secondary compartment.  The internal divider has several small pockets for things like pens, phones,etc and is itself a zippered pocket of decent size.  Under the flap on the outside of the bag are 5 zippered pockets of various sizes (all of them fairly small).  On the narrow end there is a small elastic pouch (think water bottle size).  On the outside back there a pouch (no zipper or closure) and a fairly roomy zippered pocket, which has a small, plush pouch (some sort of velvety type material) that has a velcro tab to secure it.  Finally there is a zipper than runs all the way around the outside of the bag and can be used to partially separate the main compartment from the back compartment.  Basically it'll allow you to stuff the bag a little bit wider.  Or I suppose if you wanted you could use that zippered space as another storage compartment.  But given the non-elastic width of the bag you likely wouldn't be able to use that as a compartment and still fit something in the main compartment.  It's hard to explain without actually seeing the bag.  Just know that this bag has pockets, pouches, and compartments galore.  More than most of us can possibly use at one time.

The negatives are fairly minor, but add up enough to prevent it from being a five-star product.  The small pockets are very small.  They won't hold much, and whatever they do hold better be pretty flat because they don't expand much.  The carry strap is a bit thick and unwieldy for me.  Pocket placement could use a little improvement too.  The main external pocket is on the side of the bag that will usually be up against your body.  An external pocket on the flap would have been a lot more useful.  My main gripe is about the hooks that hold the flap down.  I think they are more cumbersome than traditional snap-clasps, and they don't feel nearly as secure.  There's the option to use velcro to secure the flap, but velcro is way too noisy.