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Arc'teryxKyanite Zip-Neck Base Layer Top - Women's
$84.83 - $98.83Save 29% - 39%compared to  $140.00(11)11 reviews with an average rating of 4.8 out of 5 stars CraftActive Intensity Base Layer - Women's
$36.73Save 43%compared to  $64.95(3)3 reviews with an average rating of 3.3 out of 5 starsREI OUTLET- Top Rated
Wild RyeNona Base Layer T-Shirt - Women's
$22.83Save 71%compared to  $79.00(6)6 reviews with an average rating of 4.5 out of 5 stars Sweaty BettyJacquard Base Layer Leggings - Women's
$82.73Save 29%compared to  $118.00(24)24 reviews with an average rating of 4.0 out of 5 starsREI OUTLET- Top Rated
HalfdaysMarie Longline Base Layer Tank Top - Women's
$40.93Save 25%compared to  $55.00(13)13 reviews with an average rating of 4.6 out of 5 stars
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Related Expert Advice articles
What material is best?
Wool is moisture-wicking and odor-resistant, while synthetic fabrics are more durable and less expensive.
Match the temp to the trek
Lightweight layers are best for moderate to cool temperatures. Midweight layers are best for cold temperatures. Heavyweight layers are best for below-freezing temperatures.
Find your fit
To be able to wick sweat efficiently, your next-to-skin layer needs to actually be next to your skin. A comfortably snug fit everywhere is your goal.
Stay warm and dry when it matters most with our favorite tops and bottoms
Read full article: The 5 Best Base Layers of 2025: Staff Picks
Your choice of underwear can have a big impact on your comfort while hiking. Learn what fabric, style, fit and features to look for.
Learn the basics of layering clothing so you can stay comfortable outdoors. Find out how to use base layers, middle layers and outer layers to stay comfortable and active.