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Tuesday, January 28, 2014

Product review: Emergency Mylar Thermal Blankets

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This package contains two emergency blankets. Each blanket comes in a 4.5" x 3" pouch. Each emergency blanket is a sheet of mylar. Each package weighs 1.7 oz, each mylar sheet is 54 inches x 84 inches in size.

Something so small and light can be a lifesaver if a person is stranded. The mylar blanket is useful for anyone in wilderness or even in a trunk of a car in case of emergency. To use it the person should wrap in the blanket tucking it around the sides and the feet. It is usually put around the body and the head is covered with something else if needed. One it is used it will be impossible to get it back into the small pouch, but in some situations (like camping) it possible to find additional uses for it.

How does it work?
Mylar works by reflecting heat. If the heat is reflected in it keeps the person warm. When a perspn sweats or if the clothing is wet the wetness evaporates, this process requires energy, and lowers the body temperature. An emergency blanket slows down the process of evaporation by increasing the humidity of the air next to the skin. It also helps with conductive heat loss, which transfers heat between objects that are next to each other. If the air next to your skin is colder then the skin, the body will cool and the air will warm. If the person is outside wind keeps moving new cold air next to the skin and the person loses more and more heat. The emergency blanket prevents the wind from moving the air next to skin and thus slows down the cooling. Human body constantly radiates heat, and the reason the blanket is silver is that that finish reflects a large percentage of heat back to the body.

You can find it on Amazon by following this link.



Ali Julia review ★★★★★

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