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$130 | www.eider.com
This cozy Eider top with Polartec was made for the mountains. It excels as a base layer for any cold-weather aerobic endeavors, as well as a stand-alone top for late fall or winter runs. The checkered knit features targeted venting areas, so you won’t get clammy on the inside; the half-zip allows quick ventilation as well. 4-way stretch prevents the shirt from feeling constrictive, despite its close-to-body, athletic fit.
Check out the rest of our Winter Running Apparel Roundup.