In Hong Kong, there always something surprise you! I visited a flea market yesterday and there are huge boxes of bags, stacked like a mountain, I picked one, looks like one used in military, there are three colors to choose, black, desert camouflage, and jungle camouflage, I picked black.
The bag is flat, big opening with hard plate around it, keeping it flat. The inner cloth got a elastic rope to hold around the neck, you can tighten it by pulling to keep thing fall out.And outside clothes is sturdy nylon in 420 denin, big sales for HK$30, about US$4, what a bargain!
Just great for my Byron, with maybe two or three grafmatic holders.