It's OK. The fabric is thick and doesn't seem like it will fall apart, but stuff is going to move around. Any time my bag tips over, everything just slides around and/or falls out, becoming completely unorganized again. I got this to fit into a large, reversible tote that doesn't have pockets. It also doesn't have a top closure, which exacerbates the "stuff falling out" problem. I would NOT purchase this again given the price. I really really wish I could return it since it's not doing what I wanted it to, but alas, I've already used it and been trying to give it a chance to work for me, to no avail.
You can easily just find a whole new work bag/purse this size that would accommodate a laptop while keeping things a bit more secured. It might work for some people, but for the price I paid compared to other things available, I'm definitely bummed out and regretting my purchase.