1-Person Heatsheets Waterproof Heat Reflective Thermal Survival Blanket

The 90% heat-reflective Emergency Blanket is made from a vacuum-metalized polyethylene, resisting rips and tears so that it will not shred if nicked or punctured. It is waterproof, quiet and won't crinkle in high winds, while the high-visibility orange helps rescuers find you in all terrains.