Lifa Shirt
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The first commercially available base layer made from polypropylene, released in 1970 by Helly Hansen. It had a lining that wicked moisture away from the body, while its outer face aided evaporation. The Lifa freed outdoorsmen from wool, ushering in the “polypro” era of base layers.
From Outside Magazine, August 2015
Lead Photo: Courtesy of Helly Hansen