Skip to content

Your cart is empty

Continue shopping

Have an account?

Log in to check out faster.

Your cart

Loading...

Order special instructions

Order special instructions

Estimated total

$0.00 USD

Taxes, discounts and shipping calculated at checkout.

Customer Service
- Orders
- Shipping
- Returns
- Price Matching
- Gift Cards
- Contact us
Retail Store
Knowledge
Blog
Consignment

Camp & Hike
- Tents & Shelters
  
  3-Season Tents
  Winter Tents
  Family Tents
  Tarps
  Hammocks
- Sleeping Systems
  
  Sleeping Bags
  Sleeping Pads
  Camp Pillows
  Sleeping Bag Liners
  Quilts & Blankets
- Backpacks
  
  Daypacks
  Midsize Packs
  Expedition Packs
  Hydration Packs
  Lumbar Packs
  Travel Packs
- Lighting
  
  Headlamps
  Lanterns
  Flashlights
  Lighting Accessories
- Camp Kitchen
  
  Stoves & Accessories
  Fuels
  Coolers
  Pots & Pans
  Tableware
  Food & Drink
- Tools
  
  Axes & Saws
  Binoculars
  Water Filters
  Knives & Multitools
- Personal Care & Hygiene
  
  Bug Dopes & Nets
  Pack Towels
  First Aid
  Feminine Products
  Soaps
  Showers
  Toiletries
- Camp Essentials
  
  Camp Furniture
  Gear Storage
  Bear Kegs
  Gaiters
  Trekking Poles
  Water Bottles
  Reservoirs & Bladders
  Books & Maps
Climb
- Climbing Footwear
  
  Climbing Shoes
  Men's Approach Shoes
  Women's Approach Shoes
  Men's Mountaineering Boots
  Women's Mountaineering Boots
- Hardware
  
  Carabiners
  Quickdraws
  Protection
  Belay & Rappel
  Ascenders
- Climbing Ropes
  
  Single Ropes
  Half/Twin Ropes
  Static Ropes
  Rope Bags
- Alpine & Ice Climbing
  
  Ice Tools
  Crampons
  Ice Screws & Protection
  Mountaineering Axes
- Climbing Essentials
  
  Helmets
  Harnesses
  Crash Pads
  Chalk & Chalk Bags
  Belay Gloves
  Brushes
  Training
- Webbing & Cord
  
  Webbing
  Cordage
  Runners & Slings
  Slacklines
- Climbing Accessories
  
  Tape & Skin Care
  Belay Glasses
  Stick Clips
  Knee Pads
  Climbing Books
  Climbing Bags & Packs
- Rescue & Arborist
- Big Wall Gear
Snow
- Downhill & Touring Skiing
  
  Downhill Skis
  System Skis
  Alpine Ski Boots
  Alpine Bindings
  Telemark Boots
  Telemark Bindings
  Alpine Touring Boots
  Alpine Touring Bindings
  Ski Poles
- Snowboarding
  
  Snowboards
  Snowboard Bindings
  Snowboard Boots
  Splitboards
  Splitboard Bindings
  Splitboard Skins
- Cross-Country Skiing
  
  Cross-Country Skis
  Cross-Country Bindings
  Cross-Country Boots
  Nordic Waxes
  Nordic Poles
- Snow Gear
  
  Snowshoes
  Hand & Foot Warmers
  Winter Traction
  Goggles
  Helmets
  Snow Shovels
  Skins
- Avalanche Gear
  
  Probes
  Beacons
  Avalanche Packs
  Avalanche Accessories
  Snow Saws
- Racks and Transport
  
  Ski Racks
  Cargo Boxes
  Ski Bags
  Snowboard Bags
  Boot Bags
Bike
- Bikes & Frames
  
  Mountain Bikes
  Gravel Bikes
  Electric Bikes
  Kids Bikes
  Fat Bikes
- Parts & Components
  
  Brake Parts
  Drivetrain Parts
  Fork Parts
  Shock Parts
  Tires & Tubes
  Wheel Parts
- Bike Accessories
  
  Computers
  Locks
  Fenders
  Grips
  Waterbottle Cages
  Bags & Racks
  Bike Racks
- Bike Clothing
  
  Bike Footwear
  Shorts
  Bibs
  Liners
  Shell Pants
  Tights
  Gloves & Warmers
- Lights & Safety
  
  Headlights
  Helmets
  Reflectors
  Mirrors
- Tools & Maintenance
  
  Mechanic Tools
  Trailside Tools
  Cleaning
  Lubrication
Men's
- Footwear
  
  Hiking
  Running
  Approach
  Casual
  Indoor
  Winter Boots
  Mud & Rain Boots
  Sandals & Flip Flops
  Socks
  Insoles
- Jackets
  
  Puffy Jackets
  Winter Jackets
  Hardshell Jackets
  Rain Jackets
  Windbreakers
  Soft Shells
  Casual Jackets
  Bike Jackets
- Tops
  
  Long Sleeve Shirts
  Fleece Tops
  Sweatshirts & Hoodies
  Sweaters
  Vests
  T-Shirts
- Bottoms
  
  Active Pants
  Casual Pants
  Snow Pants
  Bibs
  Hardshell Pants
  Rain Pants
  Shorts
- Swimwear
  
  Shorts
  Swim Accessories
- Underwear
  
  Boxers
  Boxer Briefs
  Baselayers
- Accessories
  
  Sunglasses
  Watches
  Gloves & Mittens
  Apparel Care
  Belts
  Wallets
- Hats & Headwear
  
  Truckers & 5 Panels
  Winter Hats
  Sun Hats
  Balaclavas
  Scarves
  Bandanas
  Neck Warmers
Women's
- Footwear
  
  Hiking
  Running
  Approach
  Casual
  Indoor
  Winter Boots
  Mud & Rain Boots
  Sandals & Flip Flops
  Socks
  Insoles
- Jackets
  
  Puffy Jackets
  Winter Jackets
  Hardshell Jackets
  Rain Jackets
  Windbreakers
  Soft Shells
  Casual Jackets
- Tops
  
  Long Sleeve Shirts
  Fleece Tops
  Sweatshirts & Hoodies
  Sweaters
  Dresses
  Vests
  T-Shirts
  Tank Tops
- Bottoms
  
  Active Pants
  Casual Pants
  Snow Pants
  Bibs
  Hardshell Pants
  Rain Pants
  Skirts & Skorts
  Shorts
- Swimwear
  
  Tops
  Bottoms
  One-Piece
  Swim Accessories
- Underwear
  
  Bras
  Underwear Bottoms
  Baselayers
- Accessories
  
  Sunglasses
  Watches
  Gloves & Mittens
  Apparel Care
  Belts
  Wallets & Bags
- Hats & Headwear
  
  Winter Hats
  Sun Hats
  Scarves
  Bandanas
  Balaclavas
  Neck Warmers
Kids
- Footwear
  
  Hiking Boots
  Shoes
  Winter Boots
  Mud & Rain Boots
  Sandals
  Slippers
  Water Shoes
  Socks
- Clothing
  
  Jackets
  Snow Pants
  Gloves & Mittens
  Headwear
  Tops
  Bottoms
  Baselayers
  Shorts & Skirts
  Swimwear
- Gear
  
  Kid Carriers
  Bikes
  Packs & Bags
  Strollers & Trailers
  Bottles & Accessories
  Snowshoes
More
- Car Racks
  
  Cargo Carriers
  Roofrack Components
  Bike Racks
  Ski Racks
  Boat Racks
- Dog Gear
  
  Collars & Leashes
  Bowls
  Harnesses
  Packs
  Toys
  PFDs
- Fitness
  
  Disc Sports
  Yoga
  Massage
  Swim
- Gadgets
  
  Watches
  Audio
  Electronics
  Batteries & Chargers
  Flashlights
- Paddling
  
  Kayaking
  Canoeing
  SUPing
  Paddling Safety
  Paddling Clothing
  Paddling Accessories
- Miscellaneous
  
  Games
  Sunscreens
  Food & Drink
  Water Bottles
  Eyewear
  Stickers
  Umbrellas & Ponchos
  Accessory Carabiners
  Hand & Foot Warmers
- Helpful Links
  
  Hours & Location
  Consignment
  Service & Repair
  Gear Rentals
  Orders
  Returns
  Shipping
  Price Matching
  Careers
  Contact
Brands

Log in

Hours & Location
Consignment
Service & Repair
Gear Rentals

Camp & Hike
Climb
Snow
Bike
Men's
Women's
Kids
More
Brands

Search for outdoor gear and clothing

Home »Men's » Underwear » Men's Baselayers

Collection: Men's Baselayers

Sort by:

44 products

Filter:

Category (0)

Category

Baselayer Bottoms (18 products)
Baselayer Tops (26 products)

Brand (0)

Brand

Artilect (6 products)
C2 (1 product)
CEP (1 product)
Helly Hansen (1 product)
Minus 33 (2 products)
Smartwool (20 products)
Terramar (11 products)
The North Face (2 products)

Gender (0)

Gender

Men's (44 products)

Size (0)

Size

XS (5 products)
SM (36 products)
MD (37 products)
LG (34 products)
XL (37 products)
2XL (33 products)

On Sale (0)

On Sale

No (34 products)
Yes (8 products)

Price

The highest price is $200.00

$

From

To

Availability (0)

Availability

In stock (44 products)
Out of stock (36 products)

Filter and sort Filter

Filter and sort

Filter

44 products

Category

Baselayer Bottoms (18 products)
Baselayer Tops (26 products)

Clear

Brand

Artilect (6 products)
C2 (1 products)
CEP (1 products)
Helly Hansen (1 products)
Minus 33 (2 products)
Smartwool (20 products)
Terramar (11 products)
The North Face (2 products)

Clear

Gender

Men's (44 products)

Clear

Size

XS (5 products)
SM (36 products)
MD (37 products)
LG (34 products)
XL (37 products)
2XL (33 products)

Clear

On Sale

No (34 products)
Yes (8 products)

Clear

Price

The highest price is $200.00

$

From

$

To

Clear

Availability

In stock (44 products)
Out of stock (36 products)

Clear

Sort by:

Remove all

44 products

Smartwool - Classic Thermal Merino Base Layer Crew - Men's - Charcoal Heather

Smartwool - Classic Thermal Merino Base Layer Crew - Men's - Charcoal Heather

Vendor:
Smartwool

Regular price $115.00 USD

Regular price ~~$115.00 USD~~ Sale price $115.00 USD
Unit price per
Smartwool - Classic Thermal Merino Base Layer Crew - Men's - Mink Heather

Smartwool - Classic Thermal Merino Base Layer Crew - Men's - Mink Heather

Vendor:
Smartwool

Regular price $115.00 USD

Regular price ~~$115.00 USD~~ Sale price $115.00 USD
Unit price per
Smartwool - Men's Classic Thermal Merino Base Layer Bottom - Charcoal Heather

Smartwool - Men's Classic Thermal Merino Base Layer Bottom - Charcoal Heather

Vendor:
Smartwool

Regular price $115.00 USD

Regular price ~~$115.00 USD~~ Sale price $115.00 USD
Unit price per
Smartwool - Classic Thermal Merino Base Layer Colorblock Crew - Men's - Charcoal-Honey Gold

Smartwool - Classic Thermal Merino Base Layer Colorblock Crew - Men's - Charcoal-Honey Gold

Vendor:
Smartwool

Regular price $130.00 USD

Regular price ~~$130.00 USD~~ Sale price $130.00 USD
Unit price per
Smartwool - Men's Classic Thermal Merino Base Layer Bottom - Deep Navy

Smartwool - Men's Classic Thermal Merino Base Layer Bottom - Deep Navy

Vendor:
Smartwool

Regular price $115.00 USD

Regular price ~~$115.00 USD~~ Sale price $115.00 USD
Unit price per
Smartwool - Classic Thermal Merino Base Layer 1/4 Zip - Men's - Deep Navy

Smartwool - Classic Thermal Merino Base Layer 1/4 Zip - Men's - Deep Navy

Vendor:
Smartwool

Regular price $120.00 USD

Regular price ~~$120.00 USD~~ Sale price $120.00 USD
Unit price per
Smartwool - Intraknit Thermal Merino Base Layer Colorblock Crew - Men's - Deep Navy-Charcoal

Smartwool - Intraknit Thermal Merino Base Layer Colorblock Crew - Men's - Deep Navy-Charcoal

Vendor:
Smartwool

Regular price $130.00 USD

Regular price ~~$130.00 USD~~ Sale price $130.00 USD
Unit price per
Terramar - Men's Transport Crew - Black

Terramar - Men's Transport Crew - Black

Vendor:
Terramar

1 total reviews

Regular price $24.95 USD

Regular price ~~$25.00 USD~~ Sale price $24.95 USD
Unit price per
Smartwool - Classic Thermal Merino Base Layer Crew - Men's - Autumn Sun

Smartwool - Classic Thermal Merino Base Layer Crew - Men's - Autumn Sun

Vendor:
Smartwool

1 total reviews

Regular price $115.00 USD

Regular price ~~$115.00 USD~~ Sale price $115.00 USD
Unit price per
Smartwool - Intraknit Thermal Merino Base Layer Colorblock Crew - Men's - Mink-Black

Smartwool - Intraknit Thermal Merino Base Layer Colorblock Crew - Men's - Mink-Black

Vendor:
Smartwool

Regular price $130.00 USD

Regular price ~~$130.00 USD~~ Sale price $130.00 USD
Unit price per
Smartwool - Classic Thermal Merino Base Layer 1/4 Zip - Men's - Mink Heather

Smartwool - Classic Thermal Merino Base Layer 1/4 Zip - Men's - Mink Heather

Vendor:
Smartwool

Regular price $120.00 USD

Regular price ~~$120.00 USD~~ Sale price $120.00 USD
Unit price per
Smartwool - Intraknit Thermal Merino Base Layer Bottom - Men's - Charcoal Heather/Black

Smartwool - Intraknit Thermal Merino Base Layer Bottom - Men's - Charcoal Heather/Black

Vendor:
Smartwool

Regular price $130.00 USD

Regular price ~~$130.00 USD~~ Sale price $130.00 USD
Unit price per
Artilect - Men's Boulder 125 Legging - Black

Artilect - Men's Boulder 125 Legging - Black

Vendor:
Artilect

Regular price $120.00 USD

Regular price ~~$120.00 USD~~ Sale price $120.00 USD
Unit price per
Smartwool - Intraknit Thermal Merino Base Layer Crew - Men's - Winter Moss

30% off

Smartwool - Intraknit Thermal Merino Base Layer Crew - Men's - Winter Moss

Vendor:
Smartwool

Regular price $90.99 USD

Regular price ~~$130.00 USD~~ Sale price $90.99 USD
Unit price per

30% off
Terramar - 2.0 Men's Ultra Merino Crew - Black

Terramar - 2.0 Men's Ultra Merino Crew - Black

Vendor:
Terramar

Regular price $69.95 USD

Regular price ~~$70.00 USD~~ Sale price $69.95 USD
Unit price per
Terramar - Thermolator 2.0 Crew - Men's - Black

Terramar - Thermolator 2.0 Crew - Men's - Black

Vendor:
Terramar

Regular price $44.95 USD

Regular price ~~$45.00 USD~~ Sale price $44.95 USD
Unit price per
The North Face - Men's Summit Dotknit AMK Hoodie - Apex Green

The North Face - Men's Summit Dotknit AMK Hoodie - Apex Green

Vendor:
The North Face

Regular price $200.00 USD

Regular price ~~$200.00 USD~~ Sale price $200.00 USD
Unit price per
Terramar - Thermolator 2.0 Crew - Men's - Dk Grey Melange

Terramar - Thermolator 2.0 Crew - Men's - Dk Grey Melange

Vendor:
Terramar

Regular price $44.95 USD

Regular price ~~$45.00 USD~~ Sale price $44.95 USD
Unit price per
Terramar - Thermolator 2.0 Pants - Men's - Black

Terramar - Thermolator 2.0 Pants - Men's - Black

Vendor:
Terramar

Regular price $44.95 USD

Regular price ~~$45.00 USD~~ Sale price $44.95 USD
Unit price per
Artilect - Men's Redstone 185 Long Sleeve Crew - Deep Green

Artilect - Men's Redstone 185 Long Sleeve Crew - Deep Green

Vendor:
Artilect

Regular price $120.00 USD

Regular price ~~$120.00 USD~~ Sale price $120.00 USD
Unit price per
Artilect - Men's Boulder 125 Crew L/S - Black

Artilect - Men's Boulder 125 Crew L/S - Black

Vendor:
Artilect

Regular price $120.00 USD

Regular price ~~$120.00 USD~~ Sale price $120.00 USD
Unit price per
The North Face - Men's Summit Dotknit AMK Tight - Apex Green

The North Face - Men's Summit Dotknit AMK Tight - Apex Green

Vendor:
The North Face

Regular price $175.00 USD

Regular price ~~$175.00 USD~~ Sale price $175.00 USD
Unit price per
Smartwool - Intraknit Thermal Merino Base Layer 1/4 Zip - Men's - Twilight Blue

30% off

Smartwool - Intraknit Thermal Merino Base Layer 1/4 Zip - Men's - Twilight Blue

Vendor:
Smartwool

Regular price $97.99 USD

Regular price ~~$140.00 USD~~ Sale price $97.99 USD
Unit price per

30% off
C2 - Men's Elite Half-Zip Powerdry Baselayer Top - Black

66% off

C2 - Men's Elite Half-Zip Powerdry Baselayer Top - Black

Vendor:
C2

Regular price $29.99 USD

Regular price ~~$89.00 USD~~ Sale price $29.99 USD
Unit price per

66% off
Terramar - 2.0 Men's Thermolator Performance Half Zip - Black

Terramar - 2.0 Men's Thermolator Performance Half Zip - Black

Vendor:
Terramar

Regular price $49.95 USD

Regular price ~~$50.00 USD~~ Sale price $49.95 USD
Unit price per
Smartwool - Men's Classic Thermal Merino Base Layer Bottom - Black

Smartwool - Men's Classic Thermal Merino Base Layer Bottom - Black

Vendor:
Smartwool

Regular price $115.00 USD

Regular price ~~$115.00 USD~~ Sale price $115.00 USD
Unit price per
Artilect - Men's Utilitee - Dusk Blue

Artilect - Men's Utilitee - Dusk Blue

Vendor:
Artilect

Regular price $90.00 USD

Regular price ~~$90.00 USD~~ Sale price $90.00 USD
Unit price per
Artilect - Men's Redstone 185 Legging - Black

Artilect - Men's Redstone 185 Legging - Black

Vendor:
Artilect

Regular price $120.00 USD

Regular price ~~$120.00 USD~~ Sale price $120.00 USD
Unit price per
Smartwool - Intraknit Thermal Merino Base Layer 1/4 Zip - Men's - Charcoal-Nightfall Blue

Smartwool - Intraknit Thermal Merino Base Layer 1/4 Zip - Men's - Charcoal-Nightfall Blue

Vendor:
Smartwool

Regular price $140.00 USD

Regular price ~~$140.00 USD~~ Sale price $140.00 USD
Unit price per
Minus 33 - Chocorua Crew Midweight - Men's - Black

Minus 33 - Chocorua Crew Midweight - Men's - Black

Vendor:
Minus 33

Regular price $89.99 USD

Regular price ~~$89.99 USD~~ Sale price $89.99 USD
Unit price per
Smartwool - Intraknit Active Base Layer Bottom - Men's - Black

30% off

Smartwool - Intraknit Active Base Layer Bottom - Men's - Black

Vendor:
Smartwool

Regular price $76.99 USD

Regular price ~~$110.00 USD~~ Sale price $76.99 USD
Unit price per

30% off
CEP - Ski 3/4 Base Tights Men's - Black

66% off

CEP - Ski 3/4 Base Tights Men's - Black

Vendor:
CEP

Regular price From $29.99 USD

Regular price ~~$89.95 USD~~ Sale price From $29.99 USD
Unit price per

66% off
Terramar - Men's Transport Pant - Black

Terramar - Men's Transport Pant - Black

Vendor:
Terramar

Regular price $24.95 USD

Regular price ~~$25.00 USD~~ Sale price $24.95 USD
Unit price per
Terramar - Men's Ultra Merino Pant - Black

Terramar - Men's Ultra Merino Pant - Black

Vendor:
Terramar

Regular price $69.95 USD

Regular price ~~$70.00 USD~~ Sale price $69.95 USD
Unit price per
Artilect - Men's Boulder 125 1/4 Zip - Black

Artilect - Men's Boulder 125 1/4 Zip - Black

Vendor:
Artilect

Regular price $130.00 USD

Regular price ~~$130.00 USD~~ Sale price $130.00 USD
Unit price per
Smartwool - Classic All-Season Merino Base Layer Long Sleeve - Men's - Iron Heather

Smartwool - Classic All-Season Merino Base Layer Long Sleeve - Men's - Iron Heather

Vendor:
Smartwool

Regular price $90.00 USD

Regular price ~~$90.00 USD~~ Sale price $90.00 USD
Unit price per

1
2

Retail Store

Hours & Location
Consignment
Service & Repair
Gear Rentals
Careers

Retail Store

Hours & Location
Consignment
Service & Repair
Gear Rentals
Careers

Hours & Location
Consignment
Service & Repair
Gear Rentals
Careers

Customer Service

Orders
Shipping
Returns
Price Matching
Gift Cards
Contact us

Customer Service

Orders
Shipping
Returns
Price Matching
Gift Cards
Contact us

Orders
Shipping
Returns
Price Matching
Gift Cards
Contact us

Community

Blog
Knowledge
Events
About us

Community

Blog
Knowledge
Events
About us

Blog
Knowledge
Events
About us

Sign Me Up!

Unlock special offers, event invites, and early access to sales

Thank you for subscribing

Terms of Service
Privacy
Refund Policy

Choosing a selection results in a full page refresh.
Opens in a new window.