loaded 68 results

Men's Base Layer Tops

(68 results)

Products (64)

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

Smartwool
Merino 250 Crew Base Layer Top - Men's
$100.00
12 reviews with an average rating of 4.75 out of 5 stars
Smartwool
Merino 150 Crew Base Layer Long-Sleeve Top - Men's
$85.00
54 reviews with an average rating of 4.5 out of 5 stars
REI Co-op
Midweight Base Layer Crew Top - Men's
$49.95
57 reviews with an average rating of 4.75 out of 5 stars
REI Co-op
Midweight Base Layer Half-Zip Top - Men's
$54.95
62 reviews with an average rating of 4.25 out of 5 stars
Smartwool
Merino 250 Base Layer Quarter-Zip Top - Men's
$105.00
0 reviews
REI Co-op
Lightweight Base Layer Long-Sleeve Crew Top - Men's
$39.95
24 reviews with an average rating of 4.25 out of 5 stars
REI Co-op
Silk Long Underwear Crew Shirt - Men's
$49.95
33 reviews with an average rating of 4 out of 5 stars
Smartwool
Merino 150 Base Layer T-Shirt - Men's
$75.00
53 reviews with an average rating of 4.5 out of 5 stars
Smartwool
Merino 150 Quarter-Zip Top - Men's
$90.00
21 reviews with an average rating of 4.5 out of 5 stars
Patagonia
Capilene Midweight Crew Base Layer Top - Men's
$59.00
7 reviews with an average rating of 4.5 out of 5 stars
Smartwool
Intraknit 200 Crew Base Layer Top - Men's
$120.00
18 reviews with an average rating of 4.75 out of 5 stars
REI Co-op
Lightweight Base Layer Half-Zip Top - Men's
$30.93 - $44.95
14 reviews with an average rating of 4.25 out of 5 stars
Patagonia
Capilene Midweight Zip-Neck Base Layer Top - Men's
$69.00
6 reviews with an average rating of 4.75 out of 5 stars
Icebreaker
260 Tech Half-Zip Base Layer Top - Men's
$87.49 Compared to$125.00
You save 30%
120 reviews with an average rating of 4.75 out of 5 stars
Patagonia
Capilene Thermal Weight Long Underwear Crew Top - Men's
$89.00
6 reviews with an average rating of 4.5 out of 5 stars
Icebreaker
260 Tech Crewe Base Layer Top - Men's
$80.49 Compared to$115.00
You save 30%
154 reviews with an average rating of 4.75 out of 5 stars
REI Co-op
Midweight Base Layer Half-Zip Top - Men's Tall Sizes
$54.95
2 reviews with an average rating of 3.5 out of 5 stars
Smartwool
Merino 250 Pattern Base Layer Quarter-Zip Top - Men's
$115.00
0 reviews
REI Co-op
Silk Long Underwear Crew Shirt - Men's Tall Sizes
$49.95
7 reviews with an average rating of 4 out of 5 stars
REI Co-op
Merino Midweight Base Layer Long-Sleeve Crew Top - Men's
$79.50
44 reviews with an average rating of 4.25 out of 5 stars
REI Co-op
Lightweight Base Layer Crew Top - Men's
$20.93 - $29.95
12 reviews with an average rating of 3.75 out of 5 stars
REI Co-op
Merino Midweight Base Layer Crew Top - Men's
$69.95
23 reviews with an average rating of 4.5 out of 5 stars
Icebreaker
200 Oasis Crew Top - Men's
$66.49 Compared to$95.00
You save 30%
435 reviews with an average rating of 4.75 out of 5 stars
REI Co-op
Merino Midweight Base Layer Half-Zip Top - Men's
$61.93 - $89.50
44 reviews with an average rating of 4.5 out of 5 stars
tasc Performance
Elevation Merino T-Shirt - Men's
$51.73 Compared to$74.00
You save 30%
3 reviews with an average rating of 3.75 out of 5 stars
Mountain Hardwear
Diamond Peak 1/2-Zip Base Layer Top - Men's
$77.73 Compared to$120.00
You save 35%
2 reviews with an average rating of 5 out of 5 stars
Odlo
Performance Light Base Layer Top - Men's
$31.83 - $44.93 Compared to$65.00
You save 30% - 51%
8 reviews with an average rating of 4.75 out of 5 stars
Mountain Hardwear
Ghee Half-Zip Base Layer Top - Men's
$48.73 Compared to$75.00
You save 35%
2 reviews with an average rating of 3 out of 5 stars
NRS
H2Core Silkweight Long-Sleeve Shirt - Men's
$33.69 Compared to$44.95
You save 25%
19 reviews with an average rating of 4.75 out of 5 stars
Icebreaker
200 Oasis Higher We Go Long-Sleeve Crew Top - Men's
$73.49 Compared to$105.00
You save 30%
4 reviews with an average rating of 4.5 out of 5 stars

Men's Base Layer Tops

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

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

Smartwool
Merino 250 Crew Base Layer Top - Men's

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

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

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

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

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

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

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

Smartwool
Merino 150 Quarter-Zip Top - Men's

Patagonia
Capilene Midweight Crew Base Layer Top - Men's

Smartwool
Intraknit 200 Crew Base Layer Top - Men's

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

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

Icebreaker
260 Tech Half-Zip Base Layer Top - Men's

Patagonia
Capilene Thermal Weight Long Underwear Crew Top - Men's

Icebreaker
260 Tech Crewe Base Layer Top - Men's

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

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

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

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

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

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

Icebreaker
200 Oasis Crew Top - Men's

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

tasc Performance
Elevation Merino T-Shirt - Men's

Mountain Hardwear
Diamond Peak 1/2-Zip Base Layer Top - Men's

Odlo
Performance Light Base Layer Top - Men's

Mountain Hardwear
Ghee Half-Zip Base Layer Top - Men's

NRS
H2Core Silkweight Long-Sleeve Shirt - Men's

Icebreaker
200 Oasis Higher We Go Long-Sleeve Crew Top - Men's

You can compare up to 4 items at a time.

Related searches

Filter

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

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

SmartwoolMerino 250 Crew Base Layer Top - Men's

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

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

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

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

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

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

SmartwoolMerino 150 Base Layer T-Shirt - Men's

SmartwoolMerino 150 Quarter-Zip Top - Men's

PatagoniaCapilene Midweight Crew Base Layer Top - Men's

SmartwoolIntraknit 200 Crew Base Layer Top - Men's

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

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

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

PatagoniaCapilene Thermal Weight Long Underwear Crew Top - Men's

Icebreaker260 Tech Crewe Base Layer Top - Men's

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

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

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

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

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

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

Icebreaker200 Oasis Crew Top - Men's

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

tasc PerformanceElevation Merino T-Shirt - Men's

Mountain HardwearDiamond Peak 1/2-Zip Base Layer Top - Men's

OdloPerformance Light Base Layer Top - Men's

Mountain HardwearGhee Half-Zip Base Layer Top - Men's

NRSH2Core Silkweight Long-Sleeve Shirt - Men's

Icebreaker200 Oasis Higher We Go Long-Sleeve Crew Top - Men's

Related searches

Smartwool
Merino 250 Crew Base Layer Top - Men's

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

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

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

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

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

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

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

Smartwool
Merino 150 Quarter-Zip Top - Men's

Patagonia
Capilene Midweight Crew Base Layer Top - Men's

Smartwool
Intraknit 200 Crew Base Layer Top - Men's

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

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

Icebreaker
260 Tech Half-Zip Base Layer Top - Men's

Patagonia
Capilene Thermal Weight Long Underwear Crew Top - Men's

Icebreaker
260 Tech Crewe Base Layer Top - Men's

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

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

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

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

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

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

Icebreaker
200 Oasis Crew Top - Men's

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

tasc Performance
Elevation Merino T-Shirt - Men's

Mountain Hardwear
Diamond Peak 1/2-Zip Base Layer Top - Men's

Odlo
Performance Light Base Layer Top - Men's

Mountain Hardwear
Ghee Half-Zip Base Layer Top - Men's

NRS
H2Core Silkweight Long-Sleeve Shirt - Men's

Icebreaker
200 Oasis Higher We Go Long-Sleeve Crew Top - Men's