The Casualty Blanket, Type 1 is a substantially stronger version of the regular emergency blanket often found in survival kits. Made from two layers of polyethylene film laminated to reinforcing fiberglass scrim, the Type 1 Casualty Blanket resists damage from rips, tears, and punctures. Casualty Blankets have a shiny aluminized side designed to reflect heat and IR signatures, and can be used to protect against both hyper- and hypothermia.