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Men's Base Layer Tops

(72 results)

Products (68)

Choose a base layer that's best for...

warmer climates or strenuous activity

Ultralightweight

year-round use & lots of adventures

Lightweight

changing seasons & various activities

Midweight

winter, staying warm or moving slowly

Heavyweight

Showing30results per page
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REI Co-op
Lightweight Base Layer Long-Sleeve Crew Top - Men's
$39.95
54 reviews with an average rating of 4.4 out of 5 stars
REI Co-op
Midweight Base Layer Crew Top - Men's
$49.95
119 reviews with an average rating of 4.6 out of 5 stars
REI Co-op
Lightweight Base Layer Crew Top - Men's
$29.95
26 reviews with an average rating of 3.8 out of 5 stars
REI Co-op
Midweight Base Layer Half-Zip Top - Men's
$40.93 - $54.95
114 reviews with an average rating of 4.3 out of 5 stars
REI Co-op
Lightweight Base Layer Half-Zip Top - Men's
$44.95
36 reviews with an average rating of 4.5 out of 5 stars
REI Co-op
Merino Midweight Base Layer Half-Zip Top - Men's
$66.93 Compared to$89.50
You save 25%
66 reviews with an average rating of 4.5 out of 5 stars
Smartwool
Merino 150 Base Layer Shirt - Men's
$75.00
6 reviews with an average rating of 5.0 out of 5 stars
Smartwool
Merino 150 Base Layer Quarter-Zip Top - Men's
$90.00
4 reviews with an average rating of 4.5 out of 5 stars
Smartwool
Merino 150 Base Layer Long-Sleeve Shirt - Men's
$85.00
7 reviews with an average rating of 4.7 out of 5 stars
Smartwool
Merino 150 Crew Base Layer Long-Sleeve Top - Men's
$62.93 Compared to$85.00
You save 25%
76 reviews with an average rating of 4.6 out of 5 stars
Smartwool
Merino 250 Crew Base Layer Top - Men's
$100.00
46 reviews with an average rating of 4.8 out of 5 stars
REI Co-op
Merino Midweight Base Layer Crew Top - Men's
$51.93 - $69.95
39 reviews with an average rating of 4.5 out of 5 stars
Patagonia
Capilene Midweight Crew Base Layer Top - Men's
$59.00
18 reviews with an average rating of 4.4 out of 5 stars
REI Co-op
Midweight Base Layer Crew Top – Men's Tall Sizes
$49.95
11 reviews with an average rating of 3.7 out of 5 stars
Smartwool
Merino 250 Base Layer Quarter-Zip Top - Men's
$105.00
27 reviews with an average rating of 4.9 out of 5 stars
Smartwool
Merino 150 Base Layer T-Shirt - Men's
$51.93 - $55.93 Compared to$75.00
You save 25% - 30%
71 reviews with an average rating of 4.5 out of 5 stars
REI Co-op
Silk Long Underwear Crew Shirt - Men's
$49.95
36 reviews with an average rating of 4.1 out of 5 stars
Craft
Fuseknit Comfort Blocked Base Layer Top - Men's
$37.73 Compared to$64.95
You save 41%
7 reviews with an average rating of 3.0 out of 5 stars
Helly Hansen
Lifa Merino Heavyweight Crew Base Layer Top - Men's
$90.73 Compared to$130.00
You save 30%
2 reviews with an average rating of 5.0 out of 5 stars
REI Co-op
Merino Midweight Base Layer Long-Sleeve Crew Top - Men's
$79.50
69 reviews with an average rating of 4.3 out of 5 stars
REI Co-op
Midweight Base Layer Half-Zip Top - Men's Tall Sizes
$54.95
5 reviews with an average rating of 4.2 out of 5 stars
Threads 4 Thought
Base Layer Quarter-Zip Mock Shirt - Men's
$49.73 Compared to$78.00
You save 36%
1 reviews with an average rating of 5.0 out of 5 stars
Odlo
Performance Light Base Layer Top - Men's
$65.00
13 reviews with an average rating of 4.5 out of 5 stars
Smartwool
Merino 150 Quarter-Zip Top - Men's
$66.93 Compared to$90.00
You save 25%
27 reviews with an average rating of 4.5 out of 5 stars
Smartwool
Intraknit Merino 250 Thermal Quarter-Zip Base Layer Top - Men's
$112.73 Compared to$150.00
You save 24%
0 reviews
Helly Hansen
Lifa Merino Heavyweight Half-Zip Base Layer Top - Men's
$97.73 Compared to$140.00
You save 30%
2 reviews with an average rating of 4.5 out of 5 stars
Patagonia
Capilene Midweight Zip-Neck Base Layer Top - Men's
$69.00
14 reviews with an average rating of 4.7 out of 5 stars
Icebreaker
200 Oasis Crew Top - Men's
$95.00
562 reviews with an average rating of 4.8 out of 5 stars
Smartwool
Merino 250 Pattern Crew Base Layer Top - Men's
$76.93 Compared to$110.00
You save 30%
19 reviews with an average rating of 4.9 out of 5 stars
Icebreaker
200 Oasis Crewe Base Layer Top - Men's
$85.00
129 reviews with an average rating of 4.8 out of 5 stars

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Men's Base Layer Tops

Choose a base layer that's best for...

Choose a base layer that's best for...

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

REI Co-op
Midweight Base Layer Crew Top - Men's

REI Co-op
Lightweight Base Layer Crew Top - Men's

REI Co-op
Midweight Base Layer Half-Zip Top - Men's

REI Co-op
Lightweight Base Layer Half-Zip Top - Men's

REI Co-op
Merino Midweight Base Layer Half-Zip Top - Men's

Smartwool
Merino 150 Base Layer Shirt - Men's

Smartwool
Merino 150 Base Layer Quarter-Zip Top - Men's

Smartwool
Merino 150 Base Layer Long-Sleeve Shirt - Men's

Smartwool
Merino 150 Crew Base Layer Long-Sleeve Top - Men's

Smartwool
Merino 250 Crew Base Layer Top - Men's

REI Co-op
Merino Midweight Base Layer Crew Top - Men's

Patagonia
Capilene Midweight Crew Base Layer Top - Men's

REI Co-op
Midweight Base Layer Crew Top – Men's Tall Sizes

Smartwool
Merino 250 Base Layer Quarter-Zip Top - Men's

Smartwool
Merino 150 Base Layer T-Shirt - Men's

REI Co-op
Silk Long Underwear Crew Shirt - Men's

Craft
Fuseknit Comfort Blocked Base Layer Top - Men's

Helly Hansen
Lifa Merino Heavyweight Crew Base Layer Top - Men's

REI Co-op
Merino Midweight Base Layer Long-Sleeve Crew Top - Men's

REI Co-op
Midweight Base Layer Half-Zip Top - Men's Tall Sizes

Threads 4 Thought
Base Layer Quarter-Zip Mock Shirt - Men's

Odlo
Performance Light Base Layer Top - Men's

Smartwool
Merino 150 Quarter-Zip Top - Men's

Smartwool
Intraknit Merino 250 Thermal Quarter-Zip Base Layer Top - Men's

Helly Hansen
Lifa Merino Heavyweight Half-Zip Base Layer Top - Men's

Patagonia
Capilene Midweight Zip-Neck Base Layer Top - Men's

Icebreaker
200 Oasis Crew Top - Men's

Smartwool
Merino 250 Pattern Crew Base Layer Top - Men's

Icebreaker
200 Oasis Crewe Base Layer Top - Men's

Related searches

You can compare up to 4 items at a time.

Filter

Choose a base layer that's best for...

Choose a base layer that's best for...

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

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

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

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

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

REI Co-opMerino Midweight Base Layer Half-Zip Top - Men's

SmartwoolMerino 150 Base Layer Shirt - Men's

SmartwoolMerino 150 Base Layer Quarter-Zip Top - Men's

SmartwoolMerino 150 Base Layer Long-Sleeve Shirt - Men's

SmartwoolMerino 150 Crew Base Layer Long-Sleeve Top - Men's

SmartwoolMerino 250 Crew Base Layer Top - Men's

REI Co-opMerino Midweight Base Layer Crew Top - Men's

PatagoniaCapilene Midweight Crew Base Layer Top - Men's

REI Co-opMidweight Base Layer Crew Top – Men's Tall Sizes

SmartwoolMerino 250 Base Layer Quarter-Zip Top - Men's

SmartwoolMerino 150 Base Layer T-Shirt - Men's

REI Co-opSilk Long Underwear Crew Shirt - Men's

CraftFuseknit Comfort Blocked Base Layer Top - Men's

Helly HansenLifa Merino Heavyweight Crew Base Layer Top - Men's

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

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

Threads 4 ThoughtBase Layer Quarter-Zip Mock Shirt - Men's

OdloPerformance Light Base Layer Top - Men's

SmartwoolMerino 150 Quarter-Zip Top - Men's

SmartwoolIntraknit Merino 250 Thermal Quarter-Zip Base Layer Top - Men's

Helly HansenLifa Merino Heavyweight Half-Zip Base Layer Top - Men's

PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Men's

Icebreaker200 Oasis Crew Top - Men's

SmartwoolMerino 250 Pattern Crew Base Layer Top - Men's

Icebreaker200 Oasis Crewe Base Layer Top - Men's

Related searches

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

REI Co-op
Midweight Base Layer Crew Top - Men's

REI Co-op
Lightweight Base Layer Crew Top - Men's

REI Co-op
Midweight Base Layer Half-Zip Top - Men's

REI Co-op
Lightweight Base Layer Half-Zip Top - Men's

REI Co-op
Merino Midweight Base Layer Half-Zip Top - Men's

Smartwool
Merino 150 Base Layer Shirt - Men's

Smartwool
Merino 150 Base Layer Quarter-Zip Top - Men's

Smartwool
Merino 150 Base Layer Long-Sleeve Shirt - Men's

Smartwool
Merino 150 Crew Base Layer Long-Sleeve Top - Men's

Smartwool
Merino 250 Crew Base Layer Top - Men's

REI Co-op
Merino Midweight Base Layer Crew Top - Men's

Patagonia
Capilene Midweight Crew Base Layer Top - Men's

REI Co-op
Midweight Base Layer Crew Top – Men's Tall Sizes

Smartwool
Merino 250 Base Layer Quarter-Zip Top - Men's

Smartwool
Merino 150 Base Layer T-Shirt - Men's

REI Co-op
Silk Long Underwear Crew Shirt - Men's

Craft
Fuseknit Comfort Blocked Base Layer Top - Men's

Helly Hansen
Lifa Merino Heavyweight Crew Base Layer Top - Men's

REI Co-op
Merino Midweight Base Layer Long-Sleeve Crew Top - Men's

REI Co-op
Midweight Base Layer Half-Zip Top - Men's Tall Sizes

Threads 4 Thought
Base Layer Quarter-Zip Mock Shirt - Men's

Odlo
Performance Light Base Layer Top - Men's

Smartwool
Merino 150 Quarter-Zip Top - Men's

Smartwool
Intraknit Merino 250 Thermal Quarter-Zip Base Layer Top - Men's

Helly Hansen
Lifa Merino Heavyweight Half-Zip Base Layer Top - Men's

Patagonia
Capilene Midweight Zip-Neck Base Layer Top - Men's

Icebreaker
200 Oasis Crew Top - Men's

Smartwool
Merino 250 Pattern Crew Base Layer Top - Men's

Icebreaker
200 Oasis Crewe Base Layer Top - Men's