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REI Co-op Moisture Wicking Underwear

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REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's Tall Sizes
$79.95
2 reviews with an average rating of 4.5 out of 5 stars
REI Co-opMidweight Base Layer Bottoms - Men's
$24.83 compared to $49.95
You save 50%
98 reviews with an average rating of 4.4 out of 5 stars
REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
$79.95
4 reviews with an average rating of 3.0 out of 5 stars
REI Co-opLightweight Base Layer Bottoms - Men's
$39.95
37 reviews with an average rating of 4.1 out of 5 stars
REI Co-opLightweight Base Layer Bottoms - Men's Tall Sizes
$39.95
8 reviews with an average rating of 3.6 out of 5 stars
Colors

REI Co-opMerino 185 Base Layer Bottoms - Men's
$79.95
34 reviews with an average rating of 4.5 out of 5 stars
Colors
Top Rated
REI Co-opMerino Boxer Briefs - Men's
$39.95
9 reviews with an average rating of 4.8 out of 5 stars
Colors

REI Co-opEveryday Boxers - Men's
$9.83 - $22.95
61 reviews with an average rating of 4.2 out of 5 stars
Colors

REI Co-opLightweight Base Layer Half-Zip Top - Men's
$44.95
57 reviews with an average rating of 4.5 out of 5 stars
Colors

REI Co-opEveryday Boxer Briefs - Men's
$9.83 - $22.95
74 reviews with an average rating of 4.3 out of 5 stars
Colors

REI Co-opActive Bikini Underwear - Women's
$16.95
1 reviews with an average rating of 5.0 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's
$39.95
102 reviews with an average rating of 4.5 out of 5 stars
Top Rated
REI Co-opMidweight Base Layer Tights - Women's Petite Sizes
$19.83 compared to $49.95
You save 60%
60 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
REI Co-opMerino Midweight Base Layer Top - Kids'
$49.95
12 reviews with an average rating of 4.7 out of 5 stars
Colors

REI Co-opMidweight Long Underwear Bottoms - Kids'
$34.95
0 reviews
Colors

REI Co-opLightweight Crew Long Underwear Top - Kids'
$29.95
2 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMidweight Crew Long Underwear Top - Kids'
$34.95
0 reviews
REI Co-opLightweight Base Layer Tights - Women's
$39.95
30 reviews with an average rating of 4.4 out of 5 stars
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
$89.95
6 reviews with an average rating of 4.8 out of 5 stars
Colors

REI Co-opLightweight Long Underwear Bottoms - Kids'
$29.95
0 reviews
Colors

REI Co-opLightweight Long Underwear Bottoms - Infants'/Toddlers'
$19.95
0 reviews
Colors

REI Co-opLightweight Crew Long Underwear Top - Infants'/Toddlers'
$19.95
1 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMerino Midweight Base Layer Bottoms - Kids'
$29.93 - $49.95
2 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMidweight Long Underwear Bottoms - Toddlers'
$24.95
0 reviews
Colors

REI Co-opMidweight Crew Long Underwear Top - Toddlers'
$24.95
0 reviews
REI Co-opLightweight Base Layer Tights - Women's Plus Sizes
$39.95
7 reviews with an average rating of 4.3 out of 5 stars
Top Rated
REI Co-opLightweight Base Layer Long-Sleeve Zip-Neck Top - Men's Tall Sizes
$44.95
7 reviews with an average rating of 4.6 out of 5 stars
REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's Tall Sizes
$39.95
7 reviews with an average rating of 3.7 out of 5 stars
REI Co-opMerino Midweight Half-Zip Base Layer Top - Kids'
$54.95
0 reviews
Top Rated
REI Co-opMidweight Base Layer Tights - Women's
$19.83 compared to $49.95
You save 60%
158 reviews with an average rating of 4.7 out of 5 stars

Get the latest deals, news, & more from REI Co-op!

REI Co-op Moisture Wicking Underwear

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's Tall Sizes

REI Co-opMidweight Base Layer Bottoms - Men's

REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes

REI Co-opLightweight Base Layer Bottoms - Men's

REI Co-opLightweight Base Layer Bottoms - Men's Tall Sizes

REI Co-opMerino 185 Base Layer Bottoms - Men's

REI Co-opMerino Boxer Briefs - Men's

REI Co-opEveryday Boxers - Men's

REI Co-opLightweight Base Layer Half-Zip Top - Men's

REI Co-opEveryday Boxer Briefs - Men's

REI Co-opActive Bikini Underwear - Women's

REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's

REI Co-opMidweight Base Layer Tights - Women's Petite Sizes

REI Co-opMerino Midweight Base Layer Top - Kids'

REI Co-opMidweight Long Underwear Bottoms - Kids'

REI Co-opLightweight Crew Long Underwear Top - Kids'

REI Co-opMidweight Crew Long Underwear Top - Kids'

REI Co-opLightweight Base Layer Tights - Women's

REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes

REI Co-opLightweight Long Underwear Bottoms - Kids'

REI Co-opLightweight Long Underwear Bottoms - Infants'/Toddlers'

REI Co-opLightweight Crew Long Underwear Top - Infants'/Toddlers'

REI Co-opMerino Midweight Base Layer Bottoms - Kids'

REI Co-opMidweight Long Underwear Bottoms - Toddlers'

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

REI Co-opLightweight Base Layer Tights - Women's Plus Sizes

REI Co-opLightweight Base Layer Long-Sleeve Zip-Neck Top - Men's Tall Sizes

REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's Tall Sizes

REI Co-opMerino Midweight Half-Zip Base Layer Top - Kids'

REI Co-opMidweight Base Layer Tights - Women's

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REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's Tall Sizes

REI Co-opMidweight Base Layer Bottoms - Men's

REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes

REI Co-opLightweight Base Layer Bottoms - Men's

REI Co-opLightweight Base Layer Bottoms - Men's Tall Sizes

REI Co-opMerino 185 Base Layer Bottoms - Men's

REI Co-opMerino Boxer Briefs - Men's

REI Co-opEveryday Boxers - Men's

REI Co-opLightweight Base Layer Half-Zip Top - Men's

REI Co-opEveryday Boxer Briefs - Men's

REI Co-opActive Bikini Underwear - Women's

REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's

REI Co-opMidweight Base Layer Tights - Women's Petite Sizes

REI Co-opMerino Midweight Base Layer Top - Kids'

REI Co-opMidweight Long Underwear Bottoms - Kids'

REI Co-opLightweight Crew Long Underwear Top - Kids'

REI Co-opMidweight Crew Long Underwear Top - Kids'

REI Co-opLightweight Base Layer Tights - Women's

REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes

REI Co-opLightweight Long Underwear Bottoms - Kids'

REI Co-opLightweight Long Underwear Bottoms - Infants'/Toddlers'

REI Co-opLightweight Crew Long Underwear Top - Infants'/Toddlers'

REI Co-opMerino Midweight Base Layer Bottoms - Kids'

REI Co-opMidweight Long Underwear Bottoms - Toddlers'

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

REI Co-opLightweight Base Layer Tights - Women's Plus Sizes

REI Co-opLightweight Base Layer Long-Sleeve Zip-Neck Top - Men's Tall Sizes

REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's Tall Sizes

REI Co-opMerino Midweight Half-Zip Base Layer Top - Kids'

REI Co-opMidweight Base Layer Tights - Women's