A space blanket (also known as a mylar blanket, first aid blanket, emergency blanket or weather blanket) is a blanket used in emergency situations to reduce heat losses in a person's body due to thermal radiation and convection. Emergency space blankets are included in many emergency, first aid, and survival kits because they are usually waterproof and windproof. That, along with their light weight and ability to pack into a small space, has made them popular among outdoor enthusiasts and emergency workers.
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