I bought this when for when I went travelling around Asia, and it was fantastic. The poppers and zipper make it difficult for anyone to lift out of, and it has two pockets on the rear which are pressed against the body (I kept my passport in one and a small emergency cash stash in the other). Inside it is divided, big enough to carry a bottle of water, guidebook, camera, or whatever. The colour is really neat and the bag isn't too fancy, it looks quit inauspicious. Another plus is that it's not too expensive, so if you need to replace it, you can do so relatively cheaply. I've seen nice bags like this that have been really pricey, much too nice to take someone hot and sweaty which is going to have your grubby mitts on and off of it all day long.
I've put mine through the wash a couple of times, and to be expected it isn't as soft as when I bought it and its a bit rougher, the colour fades a bit too, but eh. Whenever I'm travelling or exploring, I definately take this bag with me!