What material is commonly used for survival blankets?

Survival blankets are commonly made from Mylar, a type of plastic known for its excellent insulation properties and light weight. Mylar blankets, often referred to as "space blankets," are designed to reflect body heat back to the user, making them highly effective for warmth in emergency situations. This reflective quality is crucial in survival scenarios where retaining body heat can make the difference during exposure to cold environments.

Unlike traditional fabrics like cotton or wool, which absorb moisture and can lose their insulating qualities when wet, Mylar remains effective regardless of external conditions. Its compactness also allows it to be easily packed and carried in survival kits, enhancing its utility for aircrew and outdoors enthusiasts. Nylon, while strong and durable, does not possess the same thermal reflective properties as Mylar, making it less suitable for use in survival blankets.