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Men's Underwear

Narrow Category:  Men's Boxers & Briefs   Men's Heavyweight Underwear   Men's Lightweight Underwear   Men's Midweight Underwear
OK, it is the underwear section, but let's look at this honestly; this stuff is purely for business. These are the important base layers that will keep you warm out on the trail by way of anti-wicking materials and use of the best quality fabrics. It is super important that you have a really good base layer working for you, especially when things are looking a little chillier out there. We've got some casual pieces and some that are for your more demanding day trips.
Ex Officio Men's Give-N-Go Boxer 12412171 (Ex Officio)
Ex Officio Men's Give-N-Go Boxer Brief 12412172 (Ex Officio)
Icebreaker Men's Anatomica Boxers With Fly Stripe 102207 (Icebreaker)
Smartwool Men's NTS Micro 150 Pattern Boxer Brief SW0NP711 (Smartwool)
Ex Officio Men's Give-N-Go Boxer
12412171
Ex Officio Men's Give-N-Go Boxer Brief
12412172
Icebreaker Men's Anatomica Boxers With Fly Stripe
102207
Smartwool Men's NTS Micro 150 Pattern Boxer Brief
SW0NP711
$25.95
 
Ex Officio Men's Give-N-Go Boxer 12412171 (Ex Officio)
$25.95
 
Ex Officio Men's Give-N-Go Boxer Brief 12412172 (Ex Officio)
$39.99
 
Icebreaker Men's Anatomica Boxers With Fly Stripe 102207 (Icebreaker)
$49.95
 
Smartwool Men's NTS Micro 150 Pattern Boxer Brief SW0NP711 (Smartwool)
Terramar Sports Men's Mesh Pro Boxer-6" W8097 (Terramar Sports)
Ex Officio Men's Give-N-Go Brief 12412173 (Ex Officio)
Patagonia Men's Capilene Daily Boxers 32487 (Patagonia)
Patagonia Men's Capilene Daily Boxer Briefs 32477 (Patagonia)
Terramar Sports Men's Mesh Pro Boxer-6"
W8097
Ex Officio Men's Give-N-Go Brief
12412173
Patagonia Men's Capilene Daily Boxers
32487
Patagonia Men's Capilene Daily Boxer Briefs
32477
$17.95
 
Terramar Sports Men's Mesh Pro Boxer-6" W8097 (Terramar Sports)
$19.95
 
Ex Officio Men's Give-N-Go Brief 12412173 (Ex Officio)
$35.00
 
Patagonia Men's Capilene Daily Boxers 32487 (Patagonia)
$29.00
 
Patagonia Men's Capilene Daily Boxer Briefs 32477 (Patagonia)
Smartwool Men's NTS Micro 150 Boxer Brief SW0NP701 (Smartwool)
Patagonia Men's Capilene Thermal Weight Crew Neck Shirt 43647 (Patagonia)
Terramar Sports Men's Climasense 2.0 Thermolator Top W7543 (Terramar Sports)
Patagonia Men's Capilene Thermal Weight Zip-Neck Top 43657 (Patagonia)
Smartwool Men's NTS Micro 150 Boxer Brief
SW0NP701
Patagonia Men's Capilene Thermal Weight Crew Neck Shirt
43647
Terramar Sports Men's Climasense 2.0 Thermolator Top
W7543
Patagonia Men's Capilene Thermal Weight Zip-Neck Top
43657
$47.95
 
Smartwool Men's NTS Micro 150 Boxer Brief SW0NP701 (Smartwool)
$89.00
 
Patagonia Men's Capilene Thermal Weight Crew Neck Shirt 43647 (Patagonia)
$34.95
 
Terramar Sports Men's Climasense 2.0 Thermolator Top W7543 (Terramar Sports)
$99.00
 
Patagonia Men's Capilene Thermal Weight Zip-Neck Top 43657 (Patagonia)
Patagonia Men's Capilene Thermal Weight Long Underwear Bottoms 43687 (Patagonia)
Icebreaker Men's Everyday Short Sleeve Crewe 101267 (Icebreaker)
Terramar Sports Men's EC2 Silk Underwear Bottoms S483 (Terramar Sports)
Patagonia Men's Capilene Lightweight T-Shirt 45651 (Patagonia)
Patagonia Men's Capilene Thermal Weight Long Underwear Bottoms
43687
Icebreaker Men's Everyday Short Sleeve Crewe
101267
Terramar Sports Men's EC2 Silk Underwear Bottoms
S483
Patagonia Men's Capilene Lightweight T-Shirt
45651
$89.00
 
Patagonia Men's Capilene Thermal Weight Long Underwear Bottoms 43687 (Patagonia)
$60.00
 
Icebreaker Men's Everyday Short Sleeve Crewe 101267 (Icebreaker)
$49.95
 
Terramar Sports Men's EC2 Silk Underwear Bottoms S483 (Terramar Sports)
$39.00
 
Patagonia Men's Capilene Lightweight T-Shirt 45651 (Patagonia)
Terramar Sports Men's Silk Underwear L/S Top S481 (Terramar Sports)
Icebreaker Men's Everyday Long Sleeve Half Zip Shirt 101259 (Icebreaker)
Icebreaker Men's Everyday Long Sleeve Crew Shirt 101261 (Icebreaker)
Smartwool Men's NTS Micro 150 Pattern T-Shirt NP707 (Smartwool)
Terramar Sports Men's Silk Underwear L/S Top
S481
Icebreaker Men's Everyday Long Sleeve Half Zip Shirt
101259
Icebreaker Men's Everyday Long Sleeve Crew Shirt
101261
Smartwool Men's NTS Micro 150 Pattern T-Shirt
NP707
$49.95
 
Terramar Sports Men's Silk Underwear L/S Top S481 (Terramar Sports)
$80.00
 
Icebreaker Men's Everyday Long Sleeve Half Zip Shirt 101259 (Icebreaker)
$70.00
 
Icebreaker Men's Everyday Long Sleeve Crew Shirt 101261 (Icebreaker)
$74.95
 
Smartwool Men's NTS Micro 150 Pattern T-Shirt NP707 (Smartwool)
Patagonia Men's Long-Sleeved Capilene Daily T-Shirt 45260 (Patagonia)
Patagonia Men's Long-Sleeved Capilene Daily Graphic T-Shirt 45280 (Patagonia)
Hot Chillys Men's Pepper Bi-Ply Bottom PB3073 (Hot Chillys)
Smartwool Men's NTS Mid 250 Bottoms NP605 (Smartwool)
Patagonia Men's Long-Sleeved Capilene Daily T-Shirt
45260
Patagonia Men's Long-Sleeved Capilene Daily Graphic T-Shirt
45280
Hot Chillys Men's Pepper Bi-Ply Bottom
PB3073
Smartwool Men's NTS Mid 250 Bottoms
NP605
$39.00
 
Patagonia Men's Long-Sleeved Capilene Daily T-Shirt 45260 (Patagonia)
$49.00
 
Patagonia Men's Long-Sleeved Capilene Daily Graphic T-Shirt 45280 (Patagonia)
$34.95
 
Hot Chillys Men's Pepper Bi-Ply Bottom PB3073 (Hot Chillys)
$94.95
 
Smartwool Men's NTS Mid 250 Bottoms NP605 (Smartwool)
Under Armour Men's UA Base 2.0 Crew Neck Long Sleeve Top/Shirt 1239724 (Under Armour)
Terramar Sports Men's Climasense 2.0 Thermolator Bottom W7541 (Terramar Sports)
Icebreaker Everyday Leggings with Fly 101266 (Icebreaker)
Smartwool Men's NTS Mid 250 Crew Neck Shirt NP600 (Smartwool)
Under Armour Men's UA Base 2.0 Crew Neck Long Sleeve Top/Shirt
1239724
Terramar Sports Men's Climasense 2.0 Thermolator Bottom
W7541
Icebreaker Everyday Leggings with Fly
101266
Smartwool Men's NTS Mid 250 Crew Neck Shirt
NP600
$54.95
 
Under Armour Men's UA Base 2.0 Crew Neck Long Sleeve Top/Shirt 1239724 (Under Armour)
$34.95
 
Terramar Sports Men's Climasense 2.0 Thermolator Bottom W7541 (Terramar Sports)
$70.00
 
Icebreaker Everyday Leggings with Fly 101266 (Icebreaker)
$94.95
 
Smartwool Men's NTS Mid 250 Crew Neck Shirt NP600 (Smartwool)
Hot Chillys Men's Micro-Elite 8K Ankle Tight HC9910 (Hot Chillys)
Under Armour Men's UA Base 2.0 Leggings 1239726 (Under Armour)
Patagonia Men's Capilene Midweight Zip-Neck Thermal Shirt 44445 (Patagonia)
Ex Officio Men's Give-N-Go Sport Mesh 6" Boxer Brief 12412336 (Ex Officio)
Hot Chillys Men's Micro-Elite 8K Ankle Tight
HC9910
Under Armour Men's UA Base 2.0 Leggings
1239726
Patagonia Men's Capilene Midweight Zip-Neck Thermal Shirt
44445
Ex Officio Men's Give-N-Go Sport Mesh 6" Boxer Brief
12412336
$54.95
 
Hot Chillys Men's Micro-Elite 8K Ankle Tight HC9910 (Hot Chillys)
$54.95
$43.96
 
Under Armour Men's UA Base 2.0 Leggings 1239726 (Under Armour)
$69.00
 
Patagonia Men's Capilene Midweight Zip-Neck Thermal Shirt 44445 (Patagonia)
$29.95
 
Ex Officio Men's Give-N-Go Sport Mesh 6" Boxer Brief 12412336 (Ex Officio)
Patagonia Men's Capilene Lightweight Long Underwear Bottoms 45681 (Patagonia)
Terramar Sports Men's 1.0 Tech Skins Tall Bottoms W8347T (Terramar Sports)
Patagonia Men's Merino Lightweight T-Shirt 36352 (Patagonia)
Smartwool Men's NTS Mid 250 Zip T Top NP603 (Smartwool)
Patagonia Men's Capilene Lightweight Long Underwear Bottoms
45681
Terramar Sports Men's 1.0 Tech Skins Tall Bottoms
W8347T
Patagonia Men's Merino Lightweight T-Shirt
36352
Smartwool Men's NTS Mid 250 Zip T Top
NP603
$49.00
 
Patagonia Men's Capilene Lightweight Long Underwear Bottoms 45681 (Patagonia)
$21.95
 
Terramar Sports Men's 1.0 Tech Skins Tall Bottoms W8347T (Terramar Sports)
$69.00
 
Patagonia Men's Merino Lightweight T-Shirt 36352 (Patagonia)
$99.95
 
Smartwool Men's NTS Mid 250 Zip T Top NP603 (Smartwool)
Hot Chillys Men's Pepper Bi-Ply Crewneck PB3071 (Hot Chillys)
Patagonia Men's Capilene Midweight Crew Neck Shirt 44425 (Patagonia)
Patagonia Men's Capilene Midweight Long Underwear Bottoms 44485 (Patagonia)
Under Armour Men's UA ColdGear Infrared Fitted Mock Neck Long Sleeve Top/Shirt 1238393 (Under Armour)
Hot Chillys Men's Pepper Bi-Ply Crewneck
PB3071
Patagonia Men's Capilene Midweight Crew Neck Shirt
44425
Patagonia Men's Capilene Midweight Long Underwear Bottoms
44485
Under Armour Men's UA ColdGear Infrared Fitted Mock Neck Long Sleeve Top/Shirt
1238393
$34.95
 
Hot Chillys Men's Pepper Bi-Ply Crewneck PB3071 (Hot Chillys)
$59.00
 
Patagonia Men's Capilene Midweight Crew Neck Shirt 44425 (Patagonia)
$59.00
 
Patagonia Men's Capilene Midweight Long Underwear Bottoms 44485 (Patagonia)
$54.95
 
Under Armour Men's UA ColdGear Infrared Fitted Mock Neck Long Sleeve Top/Shirt 1238393 (Under Armour)
Hot Chillys Men's Micro-Elite Chamois Boot Tech Tight HC9633 (Hot Chillys)
Volcom Men's First Layer Crew Neck Long Sleeve Thermal Shirt G2151600 (Volcom)
Hot Chillys Men's Micro-Elite Chamois 8K Crewneck HC9909 (Hot Chillys)
Icebreaker Mens Oasis Long Sleeve Hood Top 100478 (Icebreaker)
Hot Chillys Men's Micro-Elite Chamois Boot Tech Tight
HC9633
Volcom Men's First Layer Crew Neck Long Sleeve Thermal Shirt
G2151600
Hot Chillys Men's Micro-Elite Chamois 8K Crewneck
HC9909
Icebreaker Mens Oasis Long Sleeve Hood Top
100478
$44.95
 
Hot Chillys Men's Micro-Elite Chamois Boot Tech Tight HC9633 (Hot Chillys)
$59.95
 
Volcom Men's First Layer Crew Neck Long Sleeve Thermal Shirt G2151600 (Volcom)
$54.95
 
Hot Chillys Men's Micro-Elite Chamois 8K Crewneck HC9909 (Hot Chillys)
$110.00
 
Icebreaker Mens Oasis Long Sleeve Hood Top 100478 (Icebreaker)