After lugging my huge laptop backpack around everywhere for a few years, I decided I wanted something a little smaller and lighter for work/studying.  Not liking the huge/wide standard Timbuk2 messenger bags, I was happy to see that my 15" Macbook Pro was said to fit in the small Command bag, though was a bit skeptical.  It just fits with zero margin to spare, but the pocket for it is nice and both padded and ventilated.  Forget about your charger though unless you don't carry any books in the bag.

The front side of the bag has lots of pockets and a few sleeves, and will hold anything you want as long as it's flat.  I have a notebook or two, maybe a study guide in mine and they fit fine.  With that though, there is really no way to put much of anything else in the numerous pockets unless it's slim.  I normally carry around some full size headphones when studying (I know, but I really like my music) and there is no way to get them in the bag.  I wouldn't even put my reading glasses in the bag unless I could find a very slim hard shelled case for them, as they would be squished.  This is also my reason for the above charger comment.  Adding anything else to my books results in even more pressure on anything in the pockets of the bag.  I guess I just need to make sure I'm leaving the house on a full charge...

Two big complaints with the bag are with the front "hooks" for the flap.  Not sure who came up with those, but stupid idea.  Maybe more stylish than some plastic buckles, but they take more time to latch, and I've had the hooks come out on their own.  The second is the HUGE shoulder strap.  This thing looks like it belongs in a passenger plane from the 60s or something.  The strap is both very wide, and has the largest clunky plastic buckle on it.  For a company that went to the trouble to got with the stylish hooks on the front, they went far the other way with the shoulder strap.