1. The disaster kits can keep your body from rain,wind,heat and coldness.2. It is made from PET film,extremely light weight,flexible and can retain 90% body heatin cold weather.3. The disaster kits can deflect heat and sunshine in hot and sunny day.4. It is perfect for camping trips and sporting events in addition to emergencies.5. The silver side protects the patient from the heat. The gold side protects the patientfrom the cold.