CXYARY Emergency Mylar Thermal Blanket 30 Pack, 84” x 52” Space Blankets, Emergency Thermal Blanket Space Rescue Survival Gear Camping for Outdoors, Hiking, Camping SurvivalVersatile Emergency Gear These space blankets constructed from advanced aluminized Mylar material. It is a necessary supplement to civilian emergency kits and household car emergency supplies; Essential equipment for camping, hiking, and long distance travel. Perfect Thermal InsulationThese solar blankets are ideal for emergency situations, where they can effectively help prevent hypothermia and shock by retaining or reflecting body heat to retain 90%