Deecam Emergency Space Blankets, Mylar Thermal Survival Blankets Foil Camping Emergency Heat Reflective Blanket for Outdoor, First Aid, Hiking, Camping Gear, Travel (36Pack)Outdoor EssentialWaterproof and weatherproof foil blankets are necessary for your outdoor adventure. In emergencies, mylar emergency heat blanket can provide considerable heat in extremely cold situations. Mylar emergency blankets can build shelters and protect you and your family from many elements. MultipurposeMore than just a blanket, it can also be used as a survival blanket in your bug out bag, in your first aid kit and in your car emergency kit.