I drive a small roadster and as it is a convertible I don't feel secure leaving anything of value in the car except locked in the trunk.  I wanted a small sturdy bag to keep items in that I would normally keep in the glove box or center console.  This bag fills the need almost perfectly.  It has a just right compartment for my GPS and the main compartment holds my 10" netbook like it was designed for it.  My Kindle also fits along with my sunglasses, multitool knife and assorted chargers and power cords. There are other small compartments that I've not found a good use for.

I'm only giving this bag four stars as the closures on the small compartments don't hold well when there is anything in them and the main closure, while it works well would be handier for me if it were velcro as I could then open it easier with one hand while driving.

I looked a long time and this bag was the best fit I could find in an affordable bag.  The construction is robust and it also helps that it doesn't look at all feminine.