Emergency Thermal Blanket: It's made by precipitaing gaseous aluminium onto the foil flim, using the principle of heat reflection to slow down the body's heat emission and retain up 90% of your body heat. Effective to avoid hypothermia and shock in an emergency situation. Survival Blanket for All Weather: Use as a first aid blanket when an accident happend. Use as a thermal blanket when the car breaks down in the cold weather. In rainy days, It can be used as a rain poncho and can be propped up as a canopy. In sunny day, the mylar blanket also can reflect the sunlight as a sunshade. Extra Large but PortableExtra large size 63" X 83" , which can fit taller and heavier person and easier to use as emergency shelter survival tent or aluminum tarp emergency warming blanket than smaller size. Each survival blanket is individually folded, wrapped, and sealed for easy storage and retrieval. Folded size is 2.1"X 3.5",easy to store in backpacks, first aid kits, camping gear,car drawers or even in your pocket. Space Blanket Emergency Use: The Mylar thermal blankets are perfect for keep body warm from emergency situations. Helps prevent hypothermia from rain, snow, and moisture and keep you dry in damp, wet, cold, rainy environments. Strong light reflection, can be found quickly by rescuers. Camping Blanket Use: The survival blanket is not only for the emergency situations also can use in the outdoor activities. it can be the backpack waterproof cover, rain poncho, photo reflector, shade cover, bird repellent, sleeping bag liner, ground cover, bivouac sack, wind blocker, trail marker, water collector and so on. If there is any quality issue, please feel free to contact us.