my grandfather gave me an old bivy he used for a lot of his trips for many years. i looked it up on google and theres not realy much info on it. i was hoping that maybe some of the older hikers could fill me in if they can. its got a tag on the side that says early winters. it looks a lot like amsr ac bivy but its green on top tan on bottom. will post pics wen i fined out how. thanks