PONCHO LINER, NEW. Nylon ripstop material with poly fil. Lightweight and quick drying in jungle wet conditions. When attached to the G.I. poncho it makes a warm, waterproof sleeping roll. These were proven in Vietnam and are one of our most requested items. New, about 5' x 7'. with tie straps all around. It does not have a hole in the center. made to turn the poncho into a sleep system.