Breathable Long Underwear

Stay comfortable and warm with our collection of breathable long underwear. Designed for optimal moisture-wicking and temperature regulation, these essentials keep you dry and cozy during any outdoor activity. Crafted from lightweight, stretchy materials, they offer a snug fit without sacrificing mobility. Perfect for layering under your favorite winter gear, our breathable long underwear ensures you can enjoy the cold weather without discomfort. Explore our selection to find the ideal base layer for your next adventure.

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33 products
View:  All|33 Products
ColdPruf Men's Performance Baselayer Pants
  • Black

ColdPruf Men's Performance Baselayer Pants

$29.99

SmartWool Women's Intraknit Active Base Layer Bottoms
  • Black

SmartWool Women's Intraknit Active Base Layer Bottoms

$110.00

Smartwool Women's Classic Thermal Merino Baselayer Bottoms

Smartwool Women's Classic Thermal Merino Baselayer Bottoms

$115.00

Smartwool Men's Classic Thermal Merino Base Layer Bottoms
  • Black

Smartwool Men's Classic Thermal Merino Base Layer Bottoms

$115.00

Carhartt Women's Base Force Midweight Tech Baselayer Bottoms
  • Black

Carhartt Women's Base Force Midweight Tech Baselayer Bottoms

$44.99

On Sale
Smartwool Women's Intraknit Thermal Merino Baselayer Leggings
  • Black/White

Smartwool Women's Intraknit Thermal Merino Baselayer Leggings

$73.48

WAS: $130.00*

On Sale
Smartwool Men's Intraknit Thermal Merino Base Layer Bottom
  • Black White
  • Charcoal Heather/Black

Smartwool Men's Intraknit Thermal Merino Base Layer Bottom

$88.17-$130.00

WAS: $130.00*

On Sale
Smartwool Men's Classic All-Season Merino Baselayer Bottoms
  • Iron Heather
  • Black

Smartwool Men's Classic All-Season Merino Baselayer Bottoms

$47.98-$85.00

WAS: $85.00*

On Sale
Smartwool Women's Intraknit Thermal Base Layer 3/4 Leggings
  • Black White

Smartwool Women's Intraknit Thermal Base Layer 3/4 Leggings

$67.48

WAS: $120.00*

Hot Chillys Men's Clima-Wool Merino Bottom
  • Od Green

Hot Chillys Men's Clima-Wool Merino Bottom

$125.00

On Sale
Under Armour Men's Packaged Base 2.0 Baselayer Leggings
  • Black/Pitch Gray

Under Armour Men's Packaged Base 2.0 Baselayer Leggings

$28.48

WAS: $60.00*

Adidas Men's Xperior Merino 200 Baselayer Leggings
  • Grey Five

Adidas Men's Xperior Merino 200 Baselayer Leggings

$110.00

On Sale
Smartwool Women's Classic Thermal Merino Baselayer Long Sleeve Shirt

Smartwool Women's Classic Thermal Merino Baselayer Long Sleeve Shirt

$54.73-$115.00

WAS: $115.00*

On Sale
Under Armour Men's Packaged Base 3.0 Baselayer Leggings
  • Black/Pitch Gray

Under Armour Men's Packaged Base 3.0 Baselayer Leggings

$38.98

WAS: $70.00*

Smartwool Men's Merino 250 Baselayer Bottom
  • Black

Smartwool Men's Merino 250 Baselayer Bottom

$72.97-$115.00

WAS: $115.00*

Smartwool Men's Intraknit Thermal Merino Base Layer Crew Neck Long Sleeved T-Shirt
  • Black/White
  • Winter Moss
  • Charcoal Black

Smartwool Men's Intraknit Thermal Merino Base Layer Crew Neck Long Sleeved T-Shirt

$130.00

Smartwool Youth Merino 250 Baselayer Bottom
  • Power Pink

Smartwool Youth Merino 250 Baselayer Bottom

$60.00

Smartwool Women's Intraknit Thermal Merino Crew Baselayer Top
  • Nightfall Blue/Deep Navy
  • Black White Stripe
  • Black/White

Smartwool Women's Intraknit Thermal Merino Crew Baselayer Top

$130.00

On Sale
Under Armour Men's Packaged Base 2.0 Crewneck Baselayer
  • Black/Pitch Gray

Under Armour Men's Packaged Base 2.0 Crewneck Baselayer

$33.73

WAS: $60.00*

Adidas Men's Terrex Xperior Merino 150 Baselayer Long-Sleeve Top
  • Grey Five

Adidas Men's Terrex Xperior Merino 150 Baselayer Long-Sleeve Top

$100.00

On Sale
Icebreaker Men's ZoneKnit 200 Leggings
  • Black/Jet Hthr/Cb

Icebreaker Men's ZoneKnit 200 Leggings

$140.00

WAS: $150.00*

On Sale
Smartwool Women's Merino 250 Baselayer Leggings

Smartwool Women's Merino 250 Baselayer Leggings

$72.97-$115.00

WAS: $115.00*

On Sale
Under Armour Women's Base 3.0 Baselayer Leggings
  • Black/Pitch Gray

Under Armour Women's Base 3.0 Baselayer Leggings

$39.73

WAS: $70.00*

On Sale
Smartwool Women's Intraknit Thermal Merino Pattern Baselayer Top
  • Deep Navy
  • Black

Smartwool Women's Intraknit Thermal Merino Pattern Baselayer Top

$61.48-$130.00

WAS: $130.00*

On Sale
icebreaker Men's 200 Oasis Leggings
  • Gritstone Heather

icebreaker Men's 200 Oasis Leggings

$100.00

WAS: $105.00*

Smartwool Merino 150 Baselayer Pants
  • Black

Smartwool Merino 150 Baselayer Pants

$90.00

Hot Chillys Youth Pepper Bi-Ply Tights
  • Black

Hot Chillys Youth Pepper Bi-Ply Tights

$41.00

SmartWool Youth Classic Thermal ¼ Zip Base Layer
  • Rhythmic Red

SmartWool Youth Classic Thermal ¼ Zip Base Layer

$65.00

On Sale
Under Armour Men's Packaged Base 3.0 Crewneck Baselayer
  • Black/Pitch Gray

Under Armour Men's Packaged Base 3.0 Crewneck Baselayer

$32.98

WAS: $70.00*

Patagonia Women's Capilene Midweight 1/2 Zip Baselayer Top
  • Flow/Dyno White
  • Black

Patagonia Women's Capilene Midweight 1/2 Zip Baselayer Top

$99.00

Carhartt Men's Force Midweight Micro-grid Base Layer Top
  • Black

Carhartt Men's Force Midweight Micro-grid Base Layer Top

$44.99

ColdPruf Men's Quest Performance Crew Base Layer Shirt
  • Black/Grey

ColdPruf Men's Quest Performance Crew Base Layer Shirt

$39.99

ColdPruf Women's Quest Performance Crew Base Layer Shirt
  • Black
  • Black/Grey

ColdPruf Women's Quest Performance Crew Base Layer Shirt

$39.99-$41.99

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SmartWool Women's Merino 150 Base Layer Bottoms
  • Black

SmartWool Women's Merino 150 Base Layer Bottoms

$90.00

Smartwool Men's Classic Thermal Merino Base Layer Crew Top
  • Twilight Blue Heather
  • Black Color Shift
  • Black

Smartwool Men's Classic Thermal Merino Base Layer Crew Top

$54.73-$115.00

WAS: $115.00*

Smartwool Women's Thermal Merino Crew
  • Arctic Green Heather
  • Charcoal Heather
  • Toasted Coconut Heather

Smartwool Women's Thermal Merino Crew

$120.00

Smartwool Women's Merino 250 Baselayer Top
  • Black
  • Purple Iris Retro Line
  • Chalk Violet Heather

Smartwool Women's Merino 250 Baselayer Top

See Price in Cart

WAS: $115.00*

SmartWool Men's Classic Thermal Merino 1/4 Zip Base Layer
  • Charcoal/Honey Gold
  • Winter Moss Summit Soul

SmartWool Men's Classic Thermal Merino 1/4 Zip Base Layer

$120.00-$145.00

Smartwool Women's Thermal Merino Rib Top
  • Toasted Coconut Heather
  • Chalk Violet Heather
  • Black

Smartwool Women's Thermal Merino Rib Top

$130.00

Smartwool Women's Merino 250 1/4 Zip Baselayer Top
  • Black

Smartwool Women's Merino 250 1/4 Zip Baselayer Top

$120.00

On Sale
Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew Neck T-Shirt
  • Winter Moss/Charcoal
  • Deep Navy/Twilight Blue
  • Charcoal/Winter Moss

Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew Neck T-Shirt

$61.48-$130.00

WAS: $130.00*

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