First Aid Mylar Rescue Blanket，Emergency Blankets for Survival Gear and Equip…
Mylar has insulating properties and can reflect/retain 90% of human body heat. Lightweight and Portable:This mylar blankets is lightweight and portable.
Emergency Mylar Thermal Blankets -Space Blanket Survival kit Camping Blanket …
They are reusable, waterproof and windproof and can also be used for both ground cover and shade. Perfect for hiking, camping, boating, hunting, and surviving in the cold outdoors. Individually sealed and conveniently folded in half to fit in the palm of your hand or pocket.