Mylar emergency blanket

Mylar emergency blankets save lives in extreme conditions, reflecting up to 90% of body heat and weighing just 50 grams.

About this subject

Mylar emergency blankets, also known as thermal or space blankets, are made from a polyester film coated with aluminum. This material was developed by NASA in the 1960s for thermal insulation in space missions. Since then, it has become a mandatory item in survival kits, first aid kits, and mountaineering gear. Its primary function is to retain body heat in hypothermia or shock situations, reflecting up to 90% of infrared radiation emitted by the body. Each blanket measures approximately 210 x 130 cm and weighs between 50 and 60 grams, taking up minimal space. Although it is disposable due to its fragility (tears easily), it can be reused a few times if handled carefully. Beyond rescue use, they are common in marathons and road races, provided to athletes after the race to prevent drops in body temperature. Interestingly, Mylar is a trademark of DuPont but has become a generic term for the product. In the US and globally, these blankets are widely available in camping and military surplus stores at low cost. During natural disasters such as floods or earthquakes, they are distributed in bulk by civil defense agencies. They can also be used as improvised shelter covering or as a bright signal for search and rescue operations.

Frequently Asked Questions

Can a Mylar emergency blanket be reused?

Yes, but with care. Since it is thin and fragile, it tears easily. If handled gently and folded properly, it can be reused a few times.

How does a Mylar emergency blanket work?

It reflects body heat back to the person, preventing thermal loss by radiation. The metallized material acts as an infrared mirror.

What is the standard size of a Mylar blanket?

Most measure 210 cm by 130 cm (approximately 84 x 52 inches), enough to cover an entire adult.