Two things we look for in a base layer are how lightweight it is and whether or not it has a hood. The latter isn’t necessary, but it’s supremely convenient on sunny days. There are a lot of undershirts and base layers out there; few are terrible, but few really stand out, either. These are our favorites.
Updated November 2021: We’ve added the Ibex Woolies Tech Crewe and replaced the Mountain Hardwear Ghee Hoody with the Ghee Zip-Top.
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social experiment by Livio Acerbo #greengroundit #wired https://www.wired.com/gallery/best-base-layers-winter