I didn't think I carried that much into work each day, but I had trouble putting more than a few small items and pieces of paperwork into this briefcase. It does not seal securely and I found that things (anything carried in the main pocket), would fall out without warning during normal use. Not fun to lose a cell phone or sunglasses! It's probably okay if you really only carry a few things back and forth, or have a set of screwdrivers and wrenches to carry around to jobsites, but most of the little pockets are so constrained that it was not useful for general use by me.

It is rugged and it weared well for a couple of months, but I had to switch to something bigger and more secure in holding onto its contents. If the main flap went all the way to the bottom it would probably be much more secure -- the top flap barely overlaps the main pocket. Also, the central clasp makes the bag tend to fold in half around it. As a result you end up with a curved bag that looks funny and tends to warp pads of paper, instead of a straight bag more like a briefcase or messenger bag that keeps its contents safe.