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REI Co-op Lightweight Base Layers

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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 Tights - Women's
$39.95
30 reviews with an average rating of 4.4 out of 5 stars
Colors

REI Co-opLightweight Long Underwear Bottoms - Kids'
$29.95
0 reviews
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
$89.95
5 reviews with an average rating of 4.8 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
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 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-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
$79.95
3 reviews with an average rating of 3.0 out of 5 stars
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-opLightweight Crew Long Underwear Top - Infants'/Toddlers'
$19.95
1 reviews with an average rating of 5.0 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 Tights - Women's Plus Sizes
$39.95
7 reviews with an average rating of 4.3 out of 5 stars
Colors

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

REI Co-opSilk Bottoms - Women's
$49.95
60 reviews with an average rating of 3.8 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

REI Co-opMerino 185 Base Layer Bottoms - Women's
$79.95
41 reviews with an average rating of 4.2 out of 5 stars
Colors

REI Co-opLightweight Base Layer Half-Zip Top - Women's Plus Sizes
$30.93 - $44.95
2 reviews with an average rating of 4.5 out of 5 stars
Colors
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
$89.95
28 reviews with an average rating of 4.6 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Base Layer Half-Zip Top - Women's
$44.95
42 reviews with an average rating of 4.7 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-opLightweight Base Layer Crew Top - Men's
$29.95
54 reviews with an average rating of 4.1 out of 5 stars
Colors

REI Co-opMerino Base Layer Tank Top - Women's
$49.95
2 reviews with an average rating of 4.5 out of 5 stars
Colors

REI Co-opMerino 185 Base Layer Top - Men's
$69.95
18 reviews with an average rating of 4.4 out of 5 stars
Colors
Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$79.95
49 reviews with an average rating of 4.7 out of 5 stars
Colors

REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes
$79.95
1 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMerino 185 Base Layer Top - Women's Plus Sizes
$69.95
4 reviews with an average rating of 4.3 out of 5 stars
Colors

REI Co-opMerino 185 Base Layer Top - Women's
$69.95
11 reviews with an average rating of 4.2 out of 5 stars
Colors

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes
$79.95
1 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
$79.95
61 reviews with an average rating of 4.5 out of 5 stars
Colors

REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes
$89.95
1 reviews with an average rating of 5.0 out of 5 stars

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

REI Co-op Lightweight Base Layers

REI Co-opLightweight Base Layer Bottoms - Men's

REI Co-opLightweight Base Layer Tights - Women's

REI Co-opLightweight Long Underwear Bottoms - Kids'

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

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

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

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

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

REI Co-opLightweight Crew Long Underwear Top - Kids'

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

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

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

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

REI Co-opSilk Bottoms - Women's

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

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

REI Co-opLightweight Base Layer Half-Zip Top - Women's Plus Sizes

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

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

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

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

REI Co-opMerino Base Layer Tank Top - Women's

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

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

REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes

REI Co-opMerino 185 Base Layer Top - Women's Plus Sizes

REI Co-opMerino 185 Base Layer Top - Women's

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's

REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes

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REI Co-opLightweight Base Layer Bottoms - Men's

REI Co-opLightweight Base Layer Tights - Women's

REI Co-opLightweight Long Underwear Bottoms - Kids'

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

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

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

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

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

REI Co-opLightweight Crew Long Underwear Top - Kids'

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

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

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

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

REI Co-opSilk Bottoms - Women's

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

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

REI Co-opLightweight Base Layer Half-Zip Top - Women's Plus Sizes

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

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

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

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

REI Co-opMerino Base Layer Tank Top - Women's

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

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

REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes

REI Co-opMerino 185 Base Layer Top - Women's Plus Sizes

REI Co-opMerino 185 Base Layer Top - Women's

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes

REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's

REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes

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