I have been looking for a smaller messenger bag to use while travelling. Most that I'd seen were just too big. This is the perfect size for a tablet, e-reader, phone, cables and other everyday carry items. Plenty of pockets and you could probably roll up a jacket and stuff it in too. I plan on carrying this on my next trip.
Used it on one domestic and one international trip so far - I like it! Plenty of zipper pockets, etc. Very light weight. I was even able to slip in my 13" Samsung ultrabook (about the size of the smallest MacBookPro, I think. Not with a case, but just slipping the laptop into it before boarding the plane so I can work on my laptop during the flight. Very handy.
I was looking for a bag to carry a large notebook and many other things of various sizes. This bag has everything I needed. Sturdy ripstop with beefy zippers, adjustable shoulder straps and compartments within compartments. Very happy with this bag.