Ergodyne N-Ferno 6838 Solar-Activated Dual-Layer Balaclava, One Size, Black

Protect yourself from the wind and cold with the help of this Ergodyne solar-activated balaclava. This balaclava uses solar rays to create an exothermic warming reaction, warming the material by up to 15 deg. Fahrenheit. Made of a combination of 81% nylon and 19% spandex for durability and comfort. Soft mesh inner layer for breathability. Wear both face layers in colder climates or just the mesh when you are in warmer temperatures. Can be worn as a ski mask, neck gaiter or a full-face mask. Heaterex technology uses solar rays to warm the material up to 15 deg. Fahrenheit. Lightweight fabric can fit under hard hats and ski masks or over the top of safety glasses. One size fits most. Machine washable.