The KEMP USA 10-601 60” x 72“ Mylar Foil Emergency Thermal Blanket is a lightweight multipurpose first aid blanket for body warmth maintenance, emergency shelter, protection from the weather, or reflective distress signal. The aluminized non-stretch polyester reflects body heat back to the user and stays flexible in freezing temperatures. Extremely lightweight and compact. Easily into first aid kits, hip packs, pockets, bags, and glove compartments. Windproof and waterproof.