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Smartwool Moisture Wicking Underwear

(50 products)

Products (50)

Sort: Best Match

Staff Pick
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$79.93 - $115.00
1504 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
$115.00
613 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's
$90.00
18 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
SmartwoolBoxer Briefs - Men's
$24.73
Save 29%
compared to $35.00
4 reviews with an average rating of 3.8 out of 5 stars
Size Type:
Regular, Big
REI OUTLET
SmartwoolIntraknit 6" Boxer Briefs - Men's
$36.73
Save 26%
compared to $50.00
6 reviews with an average rating of 2.8 out of 5 stars
Size Type:
Regular, Big
REI OUTLET
SmartwoolMerino Print Boxer Briefs - Men's
$34.73
Save 27%
compared to $48.00
5 reviews with an average rating of 3.2 out of 5 stars
Size Type:
Regular, Big
REI OUTLET
SmartwoolIntraknit Bikini Underwear - Women's
$34.00
5 reviews with an average rating of 1.8 out of 5 stars
Size Type:
Regular
Top Rated
SmartwoolIntraknit Hipster Underwear - Women's
$28.73
Save 28%
compared to $40.00
5 reviews with an average rating of 4.8 out of 5 stars
Size Type:
Regular
REI OUTLET
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$56.83 - $120.00
730 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's
$62.93 - $90.00
101 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
$83.93 - $120.00
24 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
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
Top Rated
SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
$97.93 - $140.00
9 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
$62.93 - $90.00
50 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino 3/4 Base Layer Bottoms - Men's
$105.00
84 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolIntraknit Active Long-Sleeve Base Layer Top - Women's
$110.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$90.00
12 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes
$120.00
19 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Plus
SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Men's
$83.93 - $120.00
1 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular, Big
SmartwoolIntraknit Active Base Layer Bottoms - Women's
$76.93 - $110.00
3 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's
$95.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$90.93 - $130.00
27 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$90.93 - $130.00
185 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$79.93 - $115.00
1146 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
SmartwoolClassic All-Season Merino 3/4 Base Layer Bottoms - Men's
$75.00
2 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$83.93 - $120.00
12 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Men's
$130.00
20 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
$90.93 - $130.00
187 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$90.00
95 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus
SmartwoolIntraknit Active Base Layer Bottoms - Men's
$76.93 - $110.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Big, Regular

1–30 of 50 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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