This is an original as found US Army M17 Gas Mask bag. This is in good condition and the canvas is very strong. The large shoulder strap is present and adjustable. There are two small outside storage pockets. (see picture) There are also a ring or two on the side for hanging things. This bag is showing wear and obvious field use and has a great patina.  This is a little dusty from long term storage.  This is 1960's Vietnam era manufacture and army surplus. They have been in storage for 40 years and just now coming out. Great knock around purse or hand bag.