Published July 31, 2015 12:00AM
Lifa Shirt
Lifa Shirt: The first commercially available base layer made from polypropylene, released in 1970 by Helly Hansen.
A newer version of Helly Hansen's invention. (Photo: Courtesy of Helly Hansen)
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.
