I think it was an army sleeping bag from the spanish-american war. It was made out of a material that had many of the same insulating qualities as tupperware plastic wrap except for it wasn't waterproof.[>:] Father-in-law said pack light since we are going on horses. Little did I know at that point. Whooooooeeeeeeeeeeeee!!!!!!! That was one cold night...got my bull in the morning though.

Seems like my brother-in-law and I used that bag for traction a couple years back when we got stuck on a duck hunt