The bag is 13" long, 5" deep and 10" high. It has a couple of minor issues.
* the bottom does not look too durable
* When the bag is full, the flap does not reach the magnetic clasps to hold it shut
* The zipper to secure the flap is difficult to use
* the carry strap is not replaceable but it is comfortable
* the handle on the top of the bag is not aligned with the center of the bag, it is offset to the side.
You would be better off looking at the Tenba DNA messenger/camera bag. I ended up buying one. It's expensive but was worth the money. More durable, has more pockets, a top zipper. Really well designed.