For any running outfit, you need a base layer that hugs against the skin. Yes, we're talking about tights. If it's below freezing, a tight layer will hold in the the heat and protect your skin from drying out. Adidas Climawarm+ Tights act like spandex, but feel like flannel – and are just right for the coldest days. [$60; adidas.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
The Interpreters We Left Behind
The Rise of Cyclocross
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