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Sun-Protective Fabric Base Layer Tops

(58 products)

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Top Rated
Icebreaker150 Zone Long-Sleeve Crew Shirt - Women's
$46.83 - $135.00
327 reviews with an average rating of 4.8 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
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
Top Rated
IcebreakerMerino Long-Sleeve Roll-Neck Base Layer Top - Women's
$220.00
13 reviews with an average rating of 4.8 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
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
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
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 Crew Long Underwear Top - Toddlers'
$24.95
0 reviews
Top Rated
Icebreaker260 Zone Half-Zip Base Layer Top - Men's
$150.00
195 reviews with an average rating of 4.7 out of 5 stars
Top Rated
REI Co-opMidweight Base Layer Crew Top - Men's
$24.83 compared to $49.95
You save 50%
219 reviews with an average rating of 4.6 out of 5 stars
Colors

REI Co-opMidweight Base Layer Half-Zip Top - Men's
$26.83 - $26.93 compared to $54.95
You save 50% - 51%
201 reviews with an average rating of 4.4 out of 5 stars
NRSExpedition Weight Base Layer Shirt - Men's
$79.95
0 reviews
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-opMerino Midweight Half-Zip Base Layer Top - Kids'
$54.95
0 reviews
Top Rated
Icebreaker260 Zone Crew Base Layer Top - Men's
$140.00
147 reviews with an average rating of 4.8 out of 5 stars
Top Rated
Icebreaker200 Oasis Long-Sleeve Scoop Base Layer Top - Women's
$105.00
185 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
REI Co-opMidweight Long-Sleeve Base Layer - Men's
$54.95
8 reviews with an average rating of 4.5 out of 5 stars
Colors

REI Co-opMidweight Base Layer Half-Zip Top - Men's
$59.95
5 reviews with an average rating of 4.2 out of 5 stars
Colors

REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
$54.95
14 reviews with an average rating of 3.6 out of 5 stars
Colors

REI Co-opMidweight Base Layer Half-Zip Top - Women's
$59.95
4 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
Icebreaker260 Tech Long-Sleeve Half-Zip Base Layer Top - Women's
$135.00
25 reviews with an average rating of 4.8 out of 5 stars
Colors

BurtonMidweight X Base Layer Long-Neck Hoodie - Men's
$44.93 - $89.95
0 reviews
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
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

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

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

Sun-Protective Fabric Base Layer Tops

Icebreaker150 Zone Long-Sleeve Crew Shirt - Women's

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

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

IcebreakerMerino Long-Sleeve Roll-Neck Base Layer Top - Women's

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

REI Co-opLightweight Crew Long Underwear Top - Kids'

REI Co-opMidweight Crew Long Underwear Top - Kids'

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

REI Co-opMerino Midweight Base Layer Top - Kids'

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

Icebreaker260 Zone Half-Zip Base Layer Top - Men's

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

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

NRSExpedition Weight Base Layer Shirt - Men's

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

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

Icebreaker260 Zone Crew Base Layer Top - Men's

Icebreaker200 Oasis Long-Sleeve Scoop Base Layer Top - Women's

REI Co-opMidweight Long-Sleeve Base Layer - Men's

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

REI Co-opMidweight Long-Sleeve Base Layer Top - Women's

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

Icebreaker260 Tech Long-Sleeve Half-Zip Base Layer Top - Women's

BurtonMidweight X Base Layer Long-Neck Hoodie - Men'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 Long-Sleeve Half-Zip Base Layer Top - Men's

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

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Icebreaker150 Zone Long-Sleeve Crew Shirt - Women's

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

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

IcebreakerMerino Long-Sleeve Roll-Neck Base Layer Top - Women's

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

REI Co-opLightweight Crew Long Underwear Top - Kids'

REI Co-opMidweight Crew Long Underwear Top - Kids'

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

REI Co-opMerino Midweight Base Layer Top - Kids'

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

Icebreaker260 Zone Half-Zip Base Layer Top - Men's

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

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

NRSExpedition Weight Base Layer Shirt - Men's

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

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

Icebreaker260 Zone Crew Base Layer Top - Men's

Icebreaker200 Oasis Long-Sleeve Scoop Base Layer Top - Women's

REI Co-opMidweight Long-Sleeve Base Layer - Men's

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

REI Co-opMidweight Long-Sleeve Base Layer Top - Women's

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

Icebreaker260 Tech Long-Sleeve Half-Zip Base Layer Top - Women's

BurtonMidweight X Base Layer Long-Neck Hoodie - Men'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 Long-Sleeve Half-Zip Base Layer Top - Men's

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

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