Here's What Runners Should Look For When Shopping For Base Layers — Plus, 10 Top Picks
Cold weather is coming, but for runners, that doesn't mean you have to switch from trails to the treadmill. Running in the cold can be made easy and even comfortable, as long as you have the right layers. Layering keeps you warm while allowing flexibility throughout your run, especially if you heat up easily during cardio. Most experts recommend starting with a base layer, then adding additional layers as necessary — ideally ones you can remove if the weather (or your body temperature) changes mid-workout.
There are two important qualities to keep in mind when choosing a base layer: it should be sweat-wicking and fit close to your skin. Each is equally important, as they'll help you stay warm and dry and avoid clammy shivers later. While cotton may come to mind, it absorbs too much moisture; that's fine in the summer if you're sweating, but in the winter, a damp undershirt leads to chills, fast. Synthetic materials like polyester and nylon are recommended, and wool is also an excellent choice — just like wool socks, wool base layers are odor-resistant, sweat-wicking, and warm. Of course, the heft of the material matters, too. Wool might be a better choice for the colder winter months, whereas a lighter base layer will do in the fall.
While it definitely takes some trial and error to discover what works best for you, we've rounded up 10 long-sleeved tops and leggings that fit the bill. Keep scrolling for our picks.
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Athleta Speedlight Top
Don't let the sweet color or ruched details fool you — the Athleta Speedlight Top ($64) is built for performance. You'll love the lightweight feel of this chafe-free, sweat-wicking fabric.
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Icebreaker Merino 200 Zone Seamless Long Sleeve Top
The wool blend in this Icebreaker Merino 200 Zone Seamless Long Sleeve Top ($130) wicks away moisture, while the brand's body-mapping technology helps ensure the shirt breathes where you need it most.
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REI Co-Op Midweight Base Layer Crew Top
You know that anything from REI is built for the outdoors, and this REI Co-Op Midweight Base Layer Crew Top ($50) is no exception, with a UPF 50+ rating to protect you on those blindingly bright winter days.
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Smartwool Merino 150 Long Sleeve Base Layer
You might know Smartwool best for its socks, but this Smartwool Merino 150 Long Sleeve Base Layer ($85) will quickly become one of your go-to tops. The shirt's nylon core will ensure it lasts, too.
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Columbia Midweight Stretch Baselayer Long Sleeve Shirt
This Columbia Midweight Stretch Baselayer Long Sleeve Shirt ($55) includes the brand's signature Omni-Heat technology to keep you warm, and the four-way stretch fabric will move as seamlessly as you do.
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UA Rush ColdGear Jacquard Leggings
The UA Rush ColdGear Jacquard Leggings ($64, originally $75) are made for winter workouts. This mineral-infused fabric is both warm and breathable, so you feel comfortable no matter how hard you're working.
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Athleta Rainier Tight
The Athleta Rainier Tight ($98) is equipped with both side and back pockets for maximum utility, and the soft, sweat-wicking fabric will keep you dry throughout your run.
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REI Co-Op Merino Midweight Base Layer Tights
For a cozy wool legging, look no further than these REI Co-Op Merino Midweight Base Layer Tights ($55, originally $80). Bonus: these chafe-resistant tights are Fair Trade Certified.
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Patagonia Endless Run Tights
The Patagonia Endless Run Tights ($69, originally $99) are made with recycled polyester that's designed to wick away moisture and dry quickly. The mesh panels behind the knee will help keep you cool, too.
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Nike Therma-FIT ADV Epic Luxe Running Leggings
You'll love the houndstooth-inspired texture of these Nike Therma-FIT ADV Epic Luxe Running Leggings ($110) and that they're made with heat-regulating technology that keeps you comfortable no matter the conditions.
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