For bike commuters looking for a second skin on winter rides, this polypropylene composition layer is warm and formfitting, so there's no drag from extra fabric. You'll want additional insulation on windy days, but this is a versatile base layer that works as well for cross-country skiing as it does on the way in to the office. [$70; hellyhansen.com]
The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
ON NEWSSTANDS NOW
Duke Lacrosse and the Fog of Scandal
How Thailand's Most Notorious Prison Became a Fight Club
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