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Sun-Protective Fabric Men's Base Layers

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REI Co-opLightweight Base Layer Bottoms - Men's
$39.95
43 reviews with an average rating of 4.2 out of 5 stars
New arrival
NRSExpedition Weight Base Layer Shirt - Men's
$79.95
1 reviews with an average rating of 3.0 out of 5 stars
REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
$79.95
6 reviews with an average rating of 3.2 out of 5 stars
Top Rated
Icebreaker260 Tech Base Layer Leggings with Fly - Men's
$125.00
162 reviews with an average rating of 4.7 out of 5 stars
Top Rated
Icebreaker200 Oasis Legless Base Layer Bottoms - Men's
$95.00
65 reviews with an average rating of 4.5 out of 5 stars
REI Co-opLightweight Base Layer Bottoms - Men's Tall Sizes
$39.95
9 reviews with an average rating of 3.8 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
Colors

REI Co-opMidweight Base Layer Bottoms - Men's
$54.95
10 reviews with an average rating of 4.2 out of 5 stars
Colors
Top Rated
REI Co-opMidweight Long-Sleeve Base Layer - Men's
$54.95
21 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
17 reviews with an average rating of 4.4 out of 5 stars
Colors
New arrival
BurtonMidweight X Base Layer Long-Neck Hoodie - Men's
$89.95
0 reviews
Colors
Top Rated
REI Co-opMerino 185 Base Layer Bottoms - Men's
$79.95
39 reviews with an average rating of 4.5 out of 5 stars
Colors
Top Rated
REI Co-opMerino 185 Base Layer Top - Men's
$69.95
20 reviews with an average rating of 4.5 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
Colors
Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$79.95
57 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
42 reviews with an average rating of 4.6 out of 5 stars
Colors
Top Rated
SmartwoolClassic All-Season Merino Base Layer T-Shirt - Men's
$75.00
63 reviews with an average rating of 4.7 out of 5 stars
Colors
Top Rated
Icebreaker200 Oasis Crewe Base Layer Top - Men's
$90.00
239 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
Icebreaker260 Tech Half-Zip Base Layer Top - Men's
$135.00
333 reviews with an average rating of 4.7 out of 5 stars
Colors
Top Rated
Icebreaker260 Tech Crewe Base Layer Top - Men's
$125.00
361 reviews with an average rating of 4.8 out of 5 stars
Colors

REI Co-opLightweight Base Layer Crew Top - Men's
$14.93 - $29.95
59 reviews with an average rating of 4.2 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Base Layer Half-Zip Top - Men's
$44.95
62 reviews with an average rating of 4.5 out of 5 stars
Colors
Top Rated
REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's
$19.93 - $39.95
117 reviews with an average rating of 4.5 out of 5 stars
Colors
Top Rated
Icebreaker260 Zone Leggings - Men's
$140.00
251 reviews with an average rating of 4.7 out of 5 stars
Colors
Top Rated
Icebreaker200 Oasis Leggings with Fly - Men's
$105.00
184 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
Icebreaker260 Zone Half-Zip Base Layer Top - Men's
$150.00
200 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
Icebreaker260 Zone Crew Base Layer Top - Men's
$140.00
148 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
Icebreaker200 Oasis Half-Zip Base Layer Top - Men's
$115.00
281 reviews with an average rating of 4.8 out of 5 stars
Colors
Top Rated
Icebreaker200 Oasis Crew Top - Men's
$105.00
774 reviews with an average rating of 4.8 out of 5 stars
REI Outlet
Terramar1.0 Transport Merino Base Layer Pants - Men's
$31.73
Save 29%
compared to $45.00
You save 29%
0 reviews

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Sun-Protective Fabric Men's Base Layers

REI Co-opLightweight Base Layer Bottoms - Men's

NRSExpedition Weight Base Layer Shirt - Men's

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

Icebreaker260 Tech Base Layer Leggings with Fly - Men's

Icebreaker200 Oasis Legless Base Layer Bottoms - Men's

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

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

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

BurtonMidweight X Base Layer Long-Neck Hoodie - Men's

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

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

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

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

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

SmartwoolClassic All-Season Merino Base Layer T-Shirt - Men's

Icebreaker200 Oasis Crewe Base Layer Top - Men's

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

Icebreaker260 Tech Crewe Base Layer Top - Men's

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

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

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

Icebreaker260 Zone Leggings - Men's

Icebreaker200 Oasis Leggings with Fly - Men's

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

Icebreaker260 Zone Crew Base Layer Top - Men's

Icebreaker200 Oasis Half-Zip Base Layer Top - Men's

Icebreaker200 Oasis Crew Top - Men's

Terramar1.0 Transport Merino Base Layer Pants - Men's

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REI Co-opLightweight Base Layer Bottoms - Men's

NRSExpedition Weight Base Layer Shirt - Men's

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

Icebreaker260 Tech Base Layer Leggings with Fly - Men's

Icebreaker200 Oasis Legless Base Layer Bottoms - Men's

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

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

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

BurtonMidweight X Base Layer Long-Neck Hoodie - Men's

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

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

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

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

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

SmartwoolClassic All-Season Merino Base Layer T-Shirt - Men's

Icebreaker200 Oasis Crewe Base Layer Top - Men's

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

Icebreaker260 Tech Crewe Base Layer Top - Men's

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

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

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

Icebreaker260 Zone Leggings - Men's

Icebreaker200 Oasis Leggings with Fly - Men's

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

Icebreaker260 Zone Crew Base Layer Top - Men's

Icebreaker200 Oasis Half-Zip Base Layer Top - Men's

Icebreaker200 Oasis Crew Top - Men's

Terramar1.0 Transport Merino Base Layer Pants - Men's