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REI Co-op
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REI Co-op Underwear

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REI Co-opMerino Boxer Briefs - Men's
$39.95
126 reviews with an average rating of 4.2 out of 5 stars
Size Type:
Regular, Big
Add Merino Boxer Briefs - Men's to Compare
Top Rated
REI Co-opMerino Bralette
$44.95
211 reviews with an average rating of 4.6 out of 5 stars
Bra Support:
Low Impact
Support Style:
Encapsulation
Fabric:
48% merino wool/32% TENCEL lyocell/15% nylon/5% LYCRA spandex
Add Merino Bralette to Compare
REI Co-opMerino Hipster Underwear - Women's
$29.95
61 reviews with an average rating of 3.9 out of 5 stars
Size Type:
Regular, Plus
Add Merino Hipster Underwear - Women's to Compare
REI Co-opEveryday Boxer Briefs - Men's
$24.95
169 reviews with an average rating of 4.1 out of 5 stars
Size Type:
Regular, Big
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REI Co-opActive Briefs - Women's
$19.95
45 reviews with an average rating of 4.1 out of 5 stars
Size Type:
Regular, Plus
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REI Co-opMerino Bikini Underwear - Women's
$27.95
65 reviews with an average rating of 4.1 out of 5 stars
Size Type:
Regular, Plus
Add Merino Bikini Underwear - Women's to Compare
REI Co-opActive Bikini Underwear - Women's
$19.95
62 reviews with an average rating of 3.4 out of 5 stars
Size Type:
Regular, Plus
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REI Co-opMerino Boxers - Men's
$39.95
88 reviews with an average rating of 4.4 out of 5 stars
Size Type:
Regular, Big
Add Merino Boxers - Men's to Compare
REI Co-opEveryday Boxers - Men's
$24.95
152 reviews with an average rating of 4.2 out of 5 stars
Size Type:
Regular, Big
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Top Rated
REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
$44.95
51 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Add Lightweight Long-Sleeve Crew Base Layer Top - Men's to Compare
REI Co-opActive Hipster Underwear - Women's
$19.95
45 reviews with an average rating of 3.9 out of 5 stars
Size Type:
Regular, Plus
Add Active Hipster Underwear - Women's to Compare
Top Rated
REI Co-opMerino 185 Base Layer Bottoms - Men's
$84.95
5 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Add Merino 185 Base Layer Bottoms - Men's to Compare
Top Rated
REI Co-opLightweight Crew Base Layer Top - Men's
$34.95
44 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Add Lightweight Crew Base Layer Top - Men's to Compare
Top Rated
REI Co-opMidweight Base Layer Crew Top - Kids'
$34.95
9 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Add Midweight Base Layer Crew Top - Kids' to Compare
Top Rated
REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
$44.95
50 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Add Lightweight Long-Sleeve Crew Base Layer Top - Women's to Compare
REI Co-opActive Bralette 2.0
$35.95
139 reviews with an average rating of 4.3 out of 5 stars
Bra Support:
Low Impact
Support Style:
Encapsulation
Fabric:
86% polyester/14% spandex mesh
Add Active Bralette 2.0 to Compare
Top Rated
REI Co-opMerino 185 Long-Sleeve Crew Base Layer Top - Men's
$84.95
5 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Add Merino 185 Long-Sleeve Crew Base Layer Top - Men's to Compare
REI Co-opMerino 185 Long-Sleeve Crew Base Layer Top - Women's
$84.95
4 reviews with an average rating of 3.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Add Merino 185 Long-Sleeve Crew Base Layer Top - Women's to Compare
Top Rated
REI Co-opLightweight Base Layer Tights - Women's
$44.95
12 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus, Petite
Add Lightweight Base Layer Tights - Women's to Compare
Top Rated
REI Co-opMerino Midweight Base Layer Bottoms - Kids'
$49.95
16 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Add Merino Midweight Base Layer Bottoms - Kids' to Compare
Top Rated
REI Co-opMidweight Half-Zip Base Layer Top - Women's
$69.95
10 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Add Midweight Half-Zip Base Layer Top - Women's to Compare
Top Rated
REI Co-opMidweight Base Layer Bottoms - Kids'
$34.95
14 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Add Midweight Base Layer Bottoms - Kids' to Compare
Top Rated
REI Co-opMerino 185 Base Layer Bottoms - Women's
$84.95
7 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Petite, Regular, Plus
Add Merino 185 Base Layer Bottoms - Women's to Compare
REI Co-opActive Thong Underwear - Women's
$16.95
31 reviews with an average rating of 4.3 out of 5 stars
Size Type:
Regular, Plus
Add Active Thong Underwear - Women's to Compare
Top Rated
REI Co-opLightweight Base Layer Bottoms - Men's
$44.95
31 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Add Lightweight Base Layer Bottoms - Men's to Compare
Top Rated
REI Co-opMidweight Long-Sleeve Crew Base Layer Top - Men's
$64.95
6 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big, Tall
Add Midweight Long-Sleeve Crew Base Layer Top - Men's to Compare
Top Rated
REI Co-opMidweight Base Layer Bottoms - Men's
$64.95
6 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big, Tall
Add Midweight Base Layer Bottoms - Men's to Compare
Top Rated
REI Co-opMerino 250 High-Rise Base Layer Leggings - Women's
$104.95
6 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Add Merino 250 High-Rise Base Layer Leggings - Women's to Compare
Top Rated
REI Co-opLightweight Crew Base Layer Top - Women's
$34.95
44 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Add Lightweight Crew Base Layer Top - Women's to Compare
REI Co-opMidweight Long-Sleeve Crew Base Layer Top - Women's
$64.95
6 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Add Midweight Long-Sleeve Crew Base Layer Top - Women's to Compare

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1–30 of 57 products

Sort: Best Match

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Our gear reviewer and REI Co-op Member tester evaluated this four-person camp shelter in windy Wyoming. Here's how it performed.

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Read full article: What REI Co-op Staff Is Giving This Year

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