A survival emergency mylar blanket—also known as a space blanket or thermal blanket—is a thin, lightweight, reflective sheet made from metallized plastic (mylar) designed to retain body heat and provide protection in emergency situations.

Primary Uses:

• Preserve body heat by reflecting up to 90% of a person’s body warmth back to them.

• Prevent hypothermia in cold environments.

• Provide shelter from wind, rain, or sun by using it as a makeshift tarp or ground cover.

• Signal for help due to its shiny, reflective surface.

• Line sleeping areas or clothing to improve insulation.

Compact and inexpensive, mylar blankets are a staple in emergency kits, survival bags, first aid kits, and outdoor gear.