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men's base layers

Base layers are uber versatile and not just underwear. Wearing a base layer as a long sleeve for early morning ascents, your merino base can also be your go-to piece for tropical excursions because it breathes so well, wicks and retains heat only when needed. Base Layers are a good looking way to be prepared for anything, your next-to-skin foundation.
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268 Products


OnS ale
Mountain Hardwear 32 Degree Not So Tights, 31" Inseam - Mens-Black
save 40%
Mountain Hardwear

$65.97

OnS ale
Mammut Alyeska 3/4 Tights - Mens-Orion / Marine
save 40%
Mammut

$71.40

Mammut Go Warm Zip LS - Mens-Black
Mammut

$99.00

OnS ale
Mammut Go Dry Long Pants - Mens-Black
save 25%
Mammut

$51.75

  • Norrona Wool Longs - Mens-Caviar
  • Norrona Wool Longs - Mens-Signal Blue
Norrona Wool Longs - Mens-Caviar
Norrona

$115.00

  • Icebreaker Anatomica Zone Boxers - Mens-Alpine / Monsoon
  • Icebreaker Anatomica Zone Boxers - Mens-Black / White
  • Icebreaker Anatomica Zone Boxers - Mens-Granite Blue Heather / Chili Red
  • Icebreaker Anatomica Zone Boxers - Mens-Nightfall / Blue Spruce
  • Icebreaker Anatomica Zone Boxers - Mens-Panther / Thunder
  • Icebreaker Anatomica Zone Boxers - Mens-Sea Blue Heather / Koi
  • Icebreaker Anatomica Zone Boxers - Mens-Sienna / Chili Red
  • Icebreaker Anatomica Zone Boxers - Mens-Timberwolf Heather / Black
+ 4
Icebreaker Anatomica Zone Boxers - Mens-Alpine / Monsoon
Icebreaker

$65.00

  • Icebreaker Anatomica Zone Long Boxers - Mens-Alpine / Monsoon
  • Icebreaker Anatomica Zone Long Boxers - Mens-Black / White
  • Icebreaker Anatomica Zone Long Boxers - Mens-Nightfall / Blue Spruce
  • Icebreaker Anatomica Zone Long Boxers - Mens-Panther / Thunder
  • Icebreaker Anatomica Zone Long Boxers - Mens-Sea Blue Heather / Koi
  • Icebreaker Anatomica Zone Long Boxers - Mens-Sienna / Chili Red
  • Icebreaker Anatomica Zone Long Boxers - Mens-Vapour Heather / Metal
+ 3
Icebreaker Anatomica Zone Long Boxers - Mens-Alpine / Monsoon
Icebreaker

$75.00

  • Rab Flux Pull-On - Mens-Beluga
  • Rab Flux Pull-On - Mens-Cactus
  • Rab Flux Pull-On - Mens-Dark Horizon
  • Rab Flux Pull-On - Mens-Ink
Rab Flux Pull-On - Mens-Beluga
Rab

$100.00

  • Saxx Underwear Quest Boxer Brief Fly - Mens-Black
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Black / Dark Charcoal
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Blue Daybreak Stripe
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Blue Dot Navajo
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Dark Charcoal
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Dark Sage
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Midnight Blue
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Navy Mountain Camo
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Red
  • Saxx Underwear Quest Boxer Brief Fly - Mens-Red Ombre Stripe
+ 6
Saxx Underwear Quest Boxer Brief Fly - Mens-Black
Saxx Underwear

$34.95

  • Saxx Underwear Ultra Brief Fly - Mens-Black
  • Saxx Underwear Ultra Brief Fly - Mens-Navy
Saxx Underwear Ultra Brief Fly - Mens-Black
Saxx Underwear

$27.95

  • Saxx Underwear Vibe Trunk - Mens-Knockout Red
  • Saxx Underwear Vibe Trunk - Mens-White Starry Night
Saxx Underwear Vibe Trunk - Mens-Knockout Red
Saxx Underwear

$33.95

OnS ale
  • Smartwool Merino 150 Printed Boxer Brief - Mens-Bright Cobalt
  • Smartwool Merino 150 Printed Boxer Brief - Mens-Deep Navy
Smartwool Merino 150 Printed Boxer Brief - Mens-Bright Cobalt
save 30%
Smartwool

$38.50

  • Ortovox 185 Rock`N`Wool LS - Mens-Grey Blend
  • Ortovox 185 Rock`N`Wool LS - Mens-Irish Green
  • Ortovox 185 Rock`N`Wool LS - Mens-Night Blue
Ortovox 185 Rock`N`Wool LS - Mens-Grey Blend
Ortovox

$135.00

  • Ortovox 185 Rock`N`Wool SS - Mens-Crazy Orange
  • Ortovox 185 Rock`N`Wool SS - Mens-Irish Green
  • Ortovox 185 Rock`N`Wool SS - Mens-Night Blue
Ortovox 185 Rock`N`Wool SS - Mens-Crazy Orange
Ortovox

$109.95

Bula Thermal Crew - Mens-Grey
Bula

$49.95

Bula Thermal Pants - Mens-Grey
Bula

$49.95

  • Fjallraven Greenland Buttoned SS - Mens-Azure Blue
  • Fjallraven Greenland Buttoned SS - Mens-Eggshell
Fjallraven Greenland Buttoned SS - Mens-Azure Blue
Fjallraven

$85.00

  • Icebreaker 150 Zone Leggings - Mens-Black / Mineral
  • Icebreaker 150 Zone Leggings - Mens-Monsoon / Chili Red
Icebreaker 150 Zone Leggings - Mens-Black / Mineral
Icebreaker

$120.00

Icebreaker 150 Zone Legless - Mens-Black / Mineral
Icebreaker

$110.00

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