Men's Base Layers and Underwear

Showing 301-350 of 715 items

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Tops (379)
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Icebreaker 200 Lightweight Contour Crewe

Base Layer Top

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$38 - $64
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Wickers Lightweight Comfortrel Long Sleeve Top

Base Layer Top

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$10 - $11
where to buy

Skins SportSkins Top - Long-Sleeve

Base Layer Top

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$50
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EMS Techwick Briefs

Boxers, Briefs, Bikini

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$18
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Helly Hansen Freeze 1/2 Zip

Base Layer Top

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$90
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Stoic Breathe Composite Zip T

Base Layer Top

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$45
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Mammut Warm Quality Longsleeve

Base Layer Top

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$55 - $95
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Icebreaker Anatomica Boxer

Boxers, Briefs, Bikini

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$35 - $49
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Houdini Airborn Tight

Base Layer Bottom

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$69
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Icebreaker 200 Lightweight Legless

Base Layer Bottom

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$42 - $69
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REI Midweight Polartec Power Dry Bottom

Base Layer Bottom

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$27
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Icebreaker Bodyfit 150 Long Sleeve Crewe

Base Layer Top

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$49 - $70
where to buy

Under Armour HeatGear Legging

Base Layer Bottom

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$40
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Mammut All-Year Longsleeve

Base Layer Top

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$75
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Terramar Silk Crew

Base Layer Top

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$25
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Mammut All-Year Zip Longsleeve

Base Layer Top

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$85
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Polarmax Double Base Layer Pant

Base Layer Bottom

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$21 - $27
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REI Mesh MTS Boxer Briefs

Base Layer Bottom

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$20
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Patagonia Merino 2 Lightweight T-Shirt

Base Layer Top

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$39 - $70
where to buy

Houdini Alpha Zip Top

Base Layer Top

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$69
where to buy

SmartWool Lightweight Bottom

Base Layer Bottom

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$49 - $84
where to buy

Spyder Charger Therma Stretch T-Neck

Base Layer Top

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$47 - $55
where to buy

Icebreaker Bodyfit 150 Short Sleeve V

Base Layer Top

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$60
where to buy

Columbia Baselayer Heavyweight Tight with Fly

Base Layer Bottom

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$45
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Icebreaker Everyday Legging

Base Layer Bottom

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$42 - $59
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Columbia PHG Camo Baselayer Midweight Tight

Base Layer Bottom

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$50 - $75
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Eddie Bauer Sports Briefs

Boxers, Briefs, Bikini

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$15
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Ibex Woolies Crew

Base Layer Top

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$38 - $80
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REI Lightweight Polartec Power Dry Crew

Base Layer Top

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$30
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Polarmax Tech Silk Boxer

Boxers, Briefs, Bikini

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$25
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Helly Hansen Stride Boxer

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$21
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REI Silk Long-Sleeve Crew

Base Layer Top

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$45
where to buy

2XU Thermal Compression Tight

Compression Piece

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$130
where to buy

Sherpa Adventure Gear Tsepun Quarter Zip

Base Layer Top

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$30
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tasc Performance Ventilated Compression Short

Compression Piece

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$28
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DaKine Talon Crew Top

Base Layer Top

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$45
where to buy

Under Armour HeatGear Fitted Shortsleeve Crew

Base Layer Top

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$30
where to buy

Ibex Balance Boxer

Boxers, Briefs, Bikini

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$50
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ExOfficio Give-N-Go Brief

Boxers, Briefs, Bikini

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$14 - $20
where to buy

Coldpruf Platinum Crew

Base Layer Top

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$25
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Arc'teryx Phase SV Bottom Bootcut

Base Layer Bottom

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$79
where to buy

Ibex Shak Lite 1/2 Zip

Base Layer Top

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$81 - $135
where to buy

REI Mesh MTS Boxers

Base Layer Bottom

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$20
where to buy

Patagonia Capilene 1 Silkweight Stretch Crew

Base Layer Top

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$21 - $35
where to buy

The North Face Warm Tight

Base Layer Bottom

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$50 - $84
where to buy

Stoic Merino 200 Bliss Shirt - Long Sleeve

Base Layer Top

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$59
where to buy

Patagonia Capilene 1 Silkweight Graphic T-Shirt

Base Layer Top

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$29 - $59
where to buy

The North Face Warm Merino Zip Neck

Base Layer Top

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$90
where to buy

Outdoor Research Radiant Hybrid Suit

One-Piece Base Layer

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$139
where to buy

Arc'teryx Rho LTW Zip

Base Layer Top

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$77 - $128
where to buy