In the 1970s, Carhartt sent a massive order of coveralls to workers building the trans-Alaskan pipeline. The Yukon Extremes® line was designed using feedback we received from people clocking in to the coldest conditions. This men's rugged layer takes our iconic active jac and equips it for ice and snow. It has a durable CORDURA® Fabric shell that fights off wind, abrasion, and light precipitation. The arctic insulation inside is the warmest we offer, and the smooth quilted lining runs from hem to hood.