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Trailspace is a product review site for outdoor enthusiasts. Use it to find and share great gear.

Base Layers and Underwear

Showing 1-50 of 1244 items

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Tops (594)
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Boxers, Briefs, Bikinis (150)
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ExOfficio Give-N-Go Boxer Brief

ExOfficio Give-N-Go Boxer Brief

Boxers, Briefs, Bikini
user rating: 5 of 5 
based on 4 reviews
$17 - $26
where to buy
Arc'teryx Rho LT Zip

Arc'teryx Rho LT Zip

Base Layer Top
user rating: 5 of 5 
based on 2 reviews
$95 - $118
where to buy
Marmot Midweight Bottom

Marmot Midweight Bottom

Base Layer Bottom
user rating: 5 of 5 
based on 2 reviews
Patagonia R1 Pants

Patagonia R1 Pants

Base Layer Bottom
user rating: 5 of 5 
based on 2 reviews
$89 - $99
where to buy
SmartWool Midweight Zip T
user rating: 5 of 5 
based on 2 reviews
$51 - $105
where to buy
Ibex Balance Briefs

Ibex Balance Briefs

Base Layer Bottom
user rating: 5 of 5 
based on 1 review
Polarmax Tech Silk Crew
user rating: 5 of 5 
based on 1 review
$17 - $19
where to buy
SmartWool Midweight Crew
user rating: 5 of 5 
based on 1 review
$38 - $95
where to buy
Helly Hansen Fly Pant

Helly Hansen Fly Pant

Base Layer Bottom
user rating: 5 of 5 
based on 1 review
$26 - $39
where to buy
Marmot Lightweight Bottom

Marmot Lightweight Bottom

Base Layer Bottom
user rating: 5 of 5 
based on 1 review
$28 - $74
where to buy
Under Armour ColdGear Fitted Legging
user rating: 5 of 5 
based on 2 reviews
$50
MSRP
Champion C9 Premium Boxer Briefs

Champion C9 Premium Boxer Briefs

Boxers, Briefs, Bikini
user rating: 5 of 5 
based on 1 review
Stoic Merino 200 1-Z Suit

Stoic Merino 200 1-Z Suit

One-Piece Base Layer
user rating: 5 of 5 
based on 1 review
Omni-Wool Midweight Crew
user rating: 5 of 5 
based on 1 review
$35
MSRP
REI Midweight Polartec Power Dry Zip-T
user rating: 5 of 5 
based on 1 review
$37
MSRP
Ortovox Merino 130 Short Sleeve
user rating: 5 of 5 
based on 1 review
$82
MSRP
Icebreaker Siren Bra
user rating: 5 of 5 
based on 1 review
$45
MSRP
Under Armour Catalyst Longsleeve T
user rating: 5 of 5 
based on 1 review
$35
MSRP
 

RedRam Merino Boxer Briefs

Boxers, Briefs, Bikini
user rating: 5 of 5 
based on 1 review
 

Haglofs Bungy Q Tights

Base Layer Bottom
user rating: 5 of 5 
based on 1 review
Icebreaker Bodyfit 260 Olympia Zip
user rating: 5 of 5 
based on 2 reviews
discontinued
Patagonia Capilene EW Stretch Zip-T
user rating: 5 of 5 
based on 2 reviews
discontinued
Helly Hansen L/S Crew
user rating: 5 of 5 
based on 2 reviews
discontinued
 

Sugoi Global Tight

Base Layer Bottom
user rating: 5 of 5 
based on 1 review
discontinued
Icebreaker Bodyfit 260 Slalom Zip
user rating: 5 of 5 
based on 1 review
discontinued
Outdoor Research Banff Bodysuit
user rating: 5 of 5 
based on 1 review
discontinued
Icebreaker GT 260 Rapid Legging
user rating: 5 of 5 
based on 1 review
discontinued
Polarmax Severe Gear Fleece Crew
user rating: 5 of 5 
based on 1 review
discontinued
The North Face XTC Midweight 1/4 Zip
user rating: 5 of 5 
based on 1 review
discontinued
 
user rating: 5 of 5 
based on 1 review
discontinued
Patagonia Capilene MW Variable Knit Crew
user rating: 5 of 5 
based on 1 review
discontinued
Outdoor Research Saturn Suit

Outdoor Research Saturn Suit

One-Piece Base Layer
user rating: 5 of 5 
based on 1 review
discontinued
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