The Best Base Layers to Keep You Warm

Base layers are important. There’s no other garment you wear more often outdoors, so you need to be sure it’s a good one. 

The two thing I look for most when buying a base layer are how lightweight it is and whether or not it has a hood. If your base layer is too heavy and warm, what can you do? You’ll start to sweat, and sweating in cold weather is dangerous. A hood is also supremely handy when you’re hiking in just your base layer and want extra warmth or protection from the sun. There are a lot of base layers out there; few are terrible, but few really stand out either. These are our favorites.

Adrienne So contributed to this guide.

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