I bought this bag to transport equipment mainly in urban areas. The bag n.est not very big but I jammed a 35mm flektogon mounted on my 7D, a 18-135mm, a water bottle, my 10 inch netbook and paperwork in the latero-dorsal pocket and in the top loader part, battery card, notebook, car key, card reader. The version that I took has a tarp, but I recommend to ask the seller if it is available (the seller amazon was geek-trend, very serious!).
The bag is described as rigid, I would say that it is robust, secure and well at the closing (Zip + clip) so no problem to go in the subway with the bag, especially since we can carry the fashion vanguard sligbag 46 by arranging one of the two strap, for switching the bag to be quickly.
