Seriously large bag.
I have had the bag for only a couple of weeks but I really like it. It is super heavy duty, thick canvas and very strong leather straps. Lots of extra attachment points. I am using it as a handlebar bag. It is suspended between my bars and my surly front rack. I can put my sleeping bag, stove/pot, down jacket, first-aid kit, and a couple of other small bags in it and still have room for more. Highly recommended.