Emergency Mylar Thermal Blankets -Space Blanket Survival Kit Camping Blanket (4-
Perfect for Outdoors, Hiking, Survival, Bug Out Bag ,Marathons or First Aid 1. They are reusable, waterproof and windproof and can also be used for both ground cover and shade. Fabric Type Mylar. Mylar insert provides insulation and the foil cover can reflect heat back to the body or deflect heat from the sun.