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Sun-Protective Fabric Base Layers

(73 products)

Products (73)

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Colors

REI Co-opMidweight Crew Long Underwear Top - Kids'

$34.95
10 reviews with an average rating of 3.8 out of 5 stars
Colors

REI Co-opLightweight Crew Long Underwear Top - Kids'

$29.95
3 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
15 reviews with an average rating of 4.7 out of 5 stars
REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes

$79.95
8 reviews with an average rating of 3.6 out of 5 stars
Colors

REI Co-opLightweight Long Underwear Bottoms - Kids'
$17.93 - $29.95

2 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

$24.95
3 reviews with an average rating of 5.0 out of 5 stars
Colors

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

$19.95
2 reviews with an average rating of 5.0 out of 5 stars
Colors

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

$19.95
1 reviews with an average rating of 5.0 out of 5 stars
Colors
Top Rated
Icebreaker250 Vertex Base Layer Leggings - Women's

$97.93 compared to $140.00
You save 30%

166 reviews with an average rating of 4.7 out of 5 stars
Top Rated
Icebreaker260 Tech Base Layer Leggings with Fly - Men's

$125.00
186 reviews with an average rating of 4.7 out of 5 stars
Colors

REI Co-opMidweight Long Underwear Bottoms - Kids'

$34.95
2 reviews with an average rating of 5.0 out of 5 stars
Colors

REI Co-opMerino Midweight Base Layer Bottoms - Kids'

$49.95
6 reviews with an average rating of 4.3 out of 5 stars
Colors

REI Co-opMidweight Long Underwear Bottoms - Toddlers'

$24.95
2 reviews with an average rating of 5.0 out of 5 stars
REI Co-opLightweight Base Layer Bottoms - Men's Tall Sizes

$39.95
11 reviews with an average rating of 3.7 out of 5 stars
Top Rated
Icebreaker200 Oasis Legless Leggings - Women's

$95.00
54 reviews with an average rating of 4.8 out of 5 stars
Top Rated
Icebreaker200 Oasis Base Layer Shorts - Women's

$75.00
13 reviews with an average rating of 4.7 out of 5 stars
Terramar2.0 Free Ride Heritage 2-Piece Set Base Layer Set - Toddlers'

$20.93 compared to $35.00
You save 40%

3 reviews with an average rating of 4.3 out of 5 stars
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes

$89.95
8 reviews with an average rating of 4.9 out of 5 stars
New arrival
NRSExpedition Weight Base Layer Shirt - Men's

$84.95
1 reviews with an average rating of 3.0 out of 5 stars
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's Tall Sizes

$79.95
3 reviews with an average rating of 4.7 out of 5 stars
IcebreakerMerinoFine Base Layer Leggings - Women's

$200.00
25 reviews with an average rating of 3.1 out of 5 stars
Top Rated
Icebreaker200 Oasis Legless Base Layer Bottoms - Men's

$95.00
69 reviews with an average rating of 4.5 out of 5 stars
Colors
New arrival
REI Co-opMidweight Base Layer Bottoms - Men's
$32.93 - $54.95

26 reviews with an average rating of 4.5 out of 5 stars
Colors
New arrival
REI Co-opMidweight Long-Sleeve Base Layer - Men's
$32.93 - $54.95

45 reviews with an average rating of 4.4 out of 5 stars
Colors
Top Rated
REI Co-opMidweight Base Layer Half-Zip Top - Men's
$35.93 - $59.95

27 reviews with an average rating of 4.6 out of 5 stars
Colors
New arrival
REI Co-opMidweight Base Layer Tights - Women's

$54.95
39 reviews with an average rating of 4.3 out of 5 stars
Colors

REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
$32.93 - $54.95

70 reviews with an average rating of 3.6 out of 5 stars
Colors

REI Co-opMidweight Base Layer Half-Zip Top - Women's
$35.93 - $59.95

41 reviews with an average rating of 4.4 out of 5 stars
Top Rated
Icebreaker200 Oasis Base Layer Shorts - Men's

$65.00
10 reviews with an average rating of 4.9 out of 5 stars
Colors
Top Rated
Icebreaker260 Tech Long-Sleeve Half-Zip Base Layer Top - Women's
$93.93 - $150.00

60 reviews with an average rating of 4.9 out of 5 stars

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

Sun-Protective Fabric Base Layers

REI Co-opMidweight Crew Long Underwear Top - Kids'

REI Co-opLightweight Crew Long Underwear Top - Kids'

REI Co-opMerino Midweight Base Layer Top - Kids'

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

REI Co-opLightweight Long Underwear Bottoms - Kids'

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

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

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

Icebreaker250 Vertex Base Layer Leggings - Women's

Icebreaker260 Tech Base Layer Leggings with Fly - Men's

REI Co-opMidweight Long Underwear Bottoms - Kids'

REI Co-opMerino Midweight Base Layer Bottoms - Kids'

REI Co-opMidweight Long Underwear Bottoms - Toddlers'

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

Icebreaker200 Oasis Legless Leggings - Women's

Icebreaker200 Oasis Base Layer Shorts - Women's

Terramar2.0 Free Ride Heritage 2-Piece Set Base Layer Set - Toddlers'

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

NRSExpedition Weight Base Layer Shirt - Men's

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

IcebreakerMerinoFine Base Layer Leggings - Women's

Icebreaker200 Oasis Legless Base Layer Bottoms - Men's

REI Co-opMidweight Base Layer Bottoms - Men's

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

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

REI Co-opMidweight Base Layer Tights - Women's

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

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

Icebreaker200 Oasis Base Layer Shorts - Men's

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

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REI Co-opMidweight Crew Long Underwear Top - Kids'

REI Co-opLightweight Crew Long Underwear Top - Kids'

REI Co-opMerino Midweight Base Layer Top - Kids'

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

REI Co-opLightweight Long Underwear Bottoms - Kids'

REI Co-opMidweight Crew Long Underwear Top - Toddlers'

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

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

Icebreaker250 Vertex Base Layer Leggings - Women's

Icebreaker260 Tech Base Layer Leggings with Fly - Men's

REI Co-opMidweight Long Underwear Bottoms - Kids'

REI Co-opMerino Midweight Base Layer Bottoms - Kids'

REI Co-opMidweight Long Underwear Bottoms - Toddlers'

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

Icebreaker200 Oasis Legless Leggings - Women's

Icebreaker200 Oasis Base Layer Shorts - Women's

Terramar2.0 Free Ride Heritage 2-Piece Set Base Layer Set - Toddlers'

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

NRSExpedition Weight Base Layer Shirt - Men's

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

IcebreakerMerinoFine Base Layer Leggings - Women's

Icebreaker200 Oasis Legless Base Layer Bottoms - Men's

REI Co-opMidweight Base Layer Bottoms - Men's

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

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

REI Co-opMidweight Base Layer Tights - Women's

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

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

Icebreaker200 Oasis Base Layer Shorts - Men's

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

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