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Long Sleeve Base Layers

(214 products)

Products (214)

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Colors
REI Co-opMidweight Crew Long Underwear Top - Kids'
$16.83 - $34.95
10 reviews with an average rating of 3.8 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's
$27.93 - $39.95
143 reviews with an average rating of 4.5 out of 5 stars
Colors
REI Outlet
Kari TraaSilja Base Layer Top - Women's
$89.73
Save 25%
compared to $120.00
0 reviews
Colors
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes
$26.83 - $89.95
10 reviews with an average rating of 5.0 out of 5 stars
Colors
New arrival
IcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's
$150.00
0 reviews
Colors
Top Rated
REI Co-opMidweight Base Layer Half-Zip Top - Men's
$23.83 - $59.95
48 reviews with an average rating of 4.6 out of 5 stars
Colors
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
$59.83 - $130.00
156 reviews with an average rating of 4.2 out of 5 stars
Colors
Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes
$23.83 - $79.95
15 reviews with an average rating of 4.8 out of 5 stars
Colors
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
$79.95
126 reviews with an average rating of 4.5 out of 5 stars
REI Outlet
IcebreakerBodyfitZone Merino 150 Zone Long-Sleeve Crewe Thermal Top - Men's
$78.73
Save 25%
compared to $105.00
0 reviews
Colors
Top Rated
Arc'teryxRho Lightweight Hoodie Base Layer Top - Women's
$130.00
14 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Crew Long Underwear Top - Infants'/Toddlers'
$19.95
5 reviews with an average rating of 5.0 out of 5 stars
New arrival
ArtilectFlatiron 185 Base Layer Crew Top - Women's
$160.00
0 reviews
Colors
Top Rated
Icebreaker200 Oasis Crew Top - Men's
$35.83 - $105.00
870 reviews with an average rating of 4.8 out of 5 stars
Colors
REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Women's
$27.93 - $39.95
142 reviews with an average rating of 4.2 out of 5 stars
Colors
Top Rated
PatagoniaCapilene Midweight Crew Base Layer Top - Men's
$39.83 - $79.00
54 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
$29.93 - $44.95
58 reviews with an average rating of 4.7 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Base Layer Half-Zip Top - Men's
$29.93 - $44.95
79 reviews with an average rating of 4.6 out of 5 stars
Colors
REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
$32.83 - $54.95
116 reviews with an average rating of 4.0 out of 5 stars
Colors
Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$79.95
107 reviews with an average rating of 4.6 out of 5 stars
Colors
REI Co-opMidweight Long-Sleeve Base Layer - Men's
$21.83 - $54.95
78 reviews with an average rating of 4.5 out of 5 stars
Colors
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$79.93 - $120.00
546 reviews with an average rating of 4.8 out of 5 stars
Colors
REI Co-opMidweight Base Layer Half-Zip Top - Women's
$35.83 - $59.95
63 reviews with an average rating of 4.4 out of 5 stars
Colors
Top Rated
Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's
$150.00
40 reviews with an average rating of 4.7 out of 5 stars
Colors
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$54.83 - $115.00
887 reviews with an average rating of 4.7 out of 5 stars
Colors
Top Rated
SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
$45.83 - $90.00
279 reviews with an average rating of 4.7 out of 5 stars
Colors
New arrival
Ortovox185 Merino Rock'n'wool Long-Sleeve Base Layer Top - Men's
$55.83 - $110.00

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REI Co-opMidweight Crew Long Underwear Top - Kids'

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

Kari TraaSilja Base Layer Top - Women's

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

IcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's

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

SmartwoolIntraknit Thermal Merino Crew 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

IcebreakerBodyfitZone Merino 150 Zone Long-Sleeve Crewe Thermal Top - Men's

Arc'teryxRho Lightweight Hoodie Base Layer Top - Women's

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

ArtilectFlatiron 185 Base Layer Crew Top - Women's

Icebreaker200 Oasis Crew Top - Men's

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

PatagoniaCapilene Midweight Crew 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-opMidweight Long-Sleeve Base Layer Top - Women's

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

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

SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's

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

Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's

SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's

SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's

Ortovox185 Merino Rock'n'wool Long-Sleeve Base Layer Top - Men's