When rescuing people. They use a thin metallic material.?

Similar if not the same material they use to keep pizza's warm when delivering them. They use them to keep babies warm or rescue people from extreme conditions.When rescuing people. They use a thin metallic material.?
I believe you are referring to Mylar Blankets. These are a "spin-off" from the space program by the way. They are used because they take up very little space, but are a great insulator.When rescuing people. They use a thin metallic material.?
Anything shiny reflects infrared heat. They are superlight and take up virtually no space, so they are easier to carry than bulky fiberfill blankets.When rescuing people. They use a thin metallic material.?
Around here, they're referred to as "space blankets". Very light and compact, lots can be stored in a small space. Very efficient insulators.

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