1.Losing body heat is a major cause of death in emergencies. The Emergency Survival Mylar Thermal Blanket can increase your chances of survival in most weather, most seasons and all circumstances. It is made of durable insulating Mylar material designed by NASA for space exploration. It retains / reflects back more of body heat. It is reusable, waterproof and windproof. 2.The Emergency Survival Mylar Thermal Blanket is extra large in size. Wrap around the body (leaving the face exposed). It is intended as an emergency shelter and can be used for camping, hiking, and surviving the cold outdoors. 3.The Emergency Survival Mylar Thermal Blanket comes . Each pack is individually wrapped and weights only 60g. It is easy very light weight and easy to carry and store in your car, back pack or together with your emergency kit. 4.EMERGENCY USE : Designed to retain up more of your body heat, completely block rain, snow, moisture.Works in most cases: Weather resistant, windproof, waterproof and excellent for rescue signaling in an emergency. 5.HOW TO USE YOUR SPACE BLANKET: Wrap in it for extra warmth, insultation layer in sleeping bag, improvised rain poncho, effective cooling sunshade, rain shelter, catching rain and storing for emergency water supply, fishing lure, sling, tourniquet, waterproof cover for gear.