[Product Information]

97% HEAT RETENTION: Much like the way aluminium foil keeps food warm, these thermal blankets keep your body warm by retaining your own body heat against your skin. Prevent hypothermia, block chemicals and humidity.
PERFECT FOR ENDURANCE ATHLETES: Marathoners, iron men, iron women and other athletes would need them at the end of races, or while waiting before races if the weather is chilly. In a hot environment they can be used to provide shade.
EXTREME INSULATION: Developed by NASA for use in space, resists hostile space environment, extremely low temperatures, and ultraviolet radiation. Not to mention what it can do for you when camping, doing any outdoor activities or even when sitting on muddy or wet ground.
SMALL, LIGHT WEIGHT & STURDY. Not made to take a serious beating, though, but they’re reusable, waterproof, windproof (and somewhat damage/tear-resistant) come in a resealable individual bag. They are very compact and do not take much room to store anywhere.
REFLECTIVE AND SHINY: Even without opening the package, one of these could be used as an emergency signal in the daylight because they are so shiny and reflective.