A genuine U.S. Army Vietnam War era flotation bladder and 5 quart canteen, this unique bladder assembly consists of a nylon cover and vinyl film bladder with funnel neck used to fill from still water using water purification tablets. When being used as a floatation device the nylon cover has belt loops to attach to a soldiers belt, the cover has a front pocket to store water purification tablets, and can be collapsed into a small package using Velcro ties. DSA (Defense Supply Agency) marked and dated 1968.