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Wool Base Layers

(263 products)

Products (263)

Sort: Best Match

SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's
$95.00
1 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$130.00
27 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolIntraknit Active Base Layer Bottoms - Men's
$110.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Big
Helly HansenLIFA Merino Midweight 3/4 Base Layer Pants - Men's
$80.00
1 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolIntraknit Thermal Merino Base Layer 3/4 Bottoms - Men's
$120.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
Top Rated
SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
$69.83 - $140.00
11 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Arc'teryxLana Merino Wool Crew Base Layer Top - Women's
$90.00
4 reviews with an average rating of 2.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
SmartwoolIntraknit Active Base Layer Bottoms - Women's
$79.93
Save 27%
compared to $110.00
6 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$81.73
Save 28%
compared to $115.00
365 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
REI OUTLET
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$105.00
126 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$120.00
16 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men's
$105.00
53 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men's
$66.73
Save 25%
compared to $90.00
58 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$33.83
Save 62%
compared to $90.00
95 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus
Top Rated
Arms of Andes300 Lightweight Alpaca Wool Base Layer Leggings - Women's
$105.00
8 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Arms of Andes300 Lightweight Alpaca Wool Half-Zip Base Layer Top - Men's
$135.00
14 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
IcebreakerMerino 200 Oasis Thermal Leggings - Women's
$105.00
67 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Arms of Andes300 Lightweight Alpaca Wool Half-Zip Base Layer Top - Women's
$115.00 - $135.00
8 reviews with an average rating of 3.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Top Rated
Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
$84.83 - $120.00
27 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Big, Regular
SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Women's
$89.73
Save 25%
compared to $120.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular, Plus
REI OUTLET
Icebreaker125 ZoneKnit Base Layer Leggings - Men's
$125.00
0 reviews
Underwear Weight:
Ultralightweight
Size Type:
Regular, Big
SmartwoolIntraknit Active Long-Sleeve Base Layer Top - Women's
$79.93
Save 27%
compared to $110.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Arms of Andes300 Alpaca Wool Long-Sleeve Crew Base Layer Top - Men's
$130.00
7 reviews with an average rating of 3.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$130.00
188 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes
$115.00 - $120.00
19 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Plus
Top Rated
REI Co-opMerino Midweight Base Layer Bottoms - Kids'
$49.95
15 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
Icebreaker260 ZoneKnit Base Layer Leggings - Men's
$119.73
Save 27%
compared to $165.00
9 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Big
REI OUTLET
SmartwoolIntraknit Thermal Max Merino Base Layer Bottoms - Women's
$100.73
Save 25%
compared to $135.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Terramar3.0 Thermawool Crew Base Layer Top - Women's
$49.73 - $52.73
Save 24% - 28%
compared to $70.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Top Rated
Wild RyeHailey Half-Zip Base Layer Top - Women's
$66.83
Save 50%
compared to $135.00
7 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular

61–90 of 263 products

Sort: Best Match

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.

Read full article: How to Choose Base Layers

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