One of the best values for outdoorsmen is the Army Lightweight Rain Poncho. Use as a rain garment, sleeping bag, or make a lean-to shelter, Snap two together for a pup field tent. Made with military specification ripstop nylon taffeta with a urethane waterproof coating.
Multiple Uses:
Simple rain protection
Waterproof ground cloth
Field expedient sleeping bag when lined with a Poncho Liner