Base Layer Bottoms

Base Layer Tops

Underwear Bottoms

Underwear Tops

Men's Base Layers & Underwear.

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136 products
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27% off
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SMARTWOOL
Merino 150 Baselayer Long Sleeve Boxed (Men's)
From $80.00 $109.99 Sale
SLXL2XL
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SMARTWOOL
Merino 250 Baselayer Bottom (Men's)
$129.99
SMLXL2XL
27% off
Quick buy
SMARTWOOL
Merino 150 Baselayer Bottom Boxed (Men's)
From $80.00 $109.99 Sale
SLXL2XL
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ICEBREAKER
BodyfitZone™ Merino 260 Zone Thermal Leggings (Men's)
$150.00
SMLXL
33% off
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SMARTWOOL
Everyday Exploration Merino Boxer Brief Boxed (Men's)
From $30.00 $44.99 Sale
SMLXL2XL
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SMARTWOOL
Merino 150 Baselayer Long Sleeve (Men's)
From $109.99
SMLXL
31% off
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SMARTWOOL
Merino 250 Baselayer Crew Boxed (Men's)
From $90.00 $129.99 Sale
BLACKDEEP NAVY
25% off
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SMARTWOOL
Merino 250 Baselayer Bottom Boxed (Men's)
From $90.00 $119.99 Sale
SXL2XL
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ARC'TERYX
Rho LT Zip Neck (Men's)
$120.00
MLXL2XL
50% off
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SWIX
RACEX BODYWEAR HALFZIP (MEN'S) - Past Season
From $40.00 $79.99 Sale
SMLXL
21% off
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SMARTWOOL
Merino 250 Baselayer Crew (Men's)
From $110.00 $139.99 Sale
MXL2XLLS
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ICEBREAKER
Merino 200 Oasis Leggings with Fly (Men's)
$115.00
SMLXL2XL3XL
29% off
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OUTDOOR RESEARCH
Next to None Boxer Briefs - 6 (Men's)
$25.00 $35.00 Sale
ML
36% off
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ICEBREAKER
Merino Anatomica Boxers With Fly (Men's)
From $35.00 $55.00 Sale
MLXL
50% off
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THE NORTH FACE
WARM POLY CREW (MEN'S)
$35.00 $69.99 Sale
SL
54% off
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SWIX
RACE X BODYWEAR LONG SLEEVE (MEN'S) - Past Season
From $30.00 $64.99 Sale
S2XLMLXL
 Quick buy
SMARTWOOL
Intraknit™ Merino 200 Crew (Men's)
$154.99
SMLXL2XL
36% off
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THE NORTH FACE
WARM POLY TIGHTS (MEN'S)
From $45.00 $69.99 Sold Out
SXL
 Quick buy
SMARTWOOL
Merino 250 Jogger Bottom (Men's)
$149.99
MLXL
 Quick buy
ARC'TERYX
Rho LT Bottom (Men's)
$100.00 Sold Out
MLXL
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ARC'TERYX
Rho AR Bottom (Men's)
$140.00 Sold Out
SMLXLXXL
40% off
Quick buy
SMARTWOOL
PhD Seamless 6" Boxer Brief (Men's)
From $30.00 $49.99 Sale
SML
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ICEBREAKER
Cool-Lite™ Merino Anatomica Boxers (Men's)
$60.00
ML
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ICEBREAKER
Merino Tech Lite II Short Sleeve T-Shirt South Alp (Men's)
$100.00
ML
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ICEBREAKER
Merino Spector Short Sleeve Crewe T-Shirt Seven Summits (Men's)
$85.00
MLXL
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ICEBREAKER
Merino Wave Short Sleeve Stripe T-Shirt (Men's)
$95.00
SML
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ICEBREAKER
Merino Wave Long Sleeve Stripe T-Shirt (Men's)
$110.00
SML
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ICEBREAKER
Merino Tech Lite II Short Sleeve T-Shirt Waschbar Wandering (Men's)
$100.00
SML