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Apparel > Men's Apparel > Men's Base Layer >

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Men's Base Layer - We have versatile men's warm base layer clothing to handle all your outdoor activities, designed to work with your body whether your trail running, hiking or just hitting the town while withstanding harsh weather conditions. Our selection offer heavyweight, midweight, and lightweight comfortable thermal wear with antimicrobial treatment to help reduce odors from excellent brands by Carhartt, Guide Series, Terramar, and Under Armour.

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Under Armour Men's The Original 9" BoxerJock Boxer Brief

Under Armour Men's The Original 9" BoxerJock Boxer Brief

Key Features
  • 4.7-oz., 90% polyester/10% elastane fabric

  • Four-way stretch for mobility and shape retention

  • Signature Moisture Transport System wicks sweat

  • Anti-odor technology keeps you fresher longer

  • Flatlock seam construction helps reduce chafing

$22.00
$20.00
Under Armour Men's ColdGear Infrared EVO Mock-Neck Shirt

Under Armour Men's ColdGear Infrared EVO Mock-Neck Shirt

Key Features
  • 87% polyester, 13% elastane ColdGear fabric

  • Slick, fast-drying exterior; soft, cozy interior

  • Four-way stretch fabrication for maximum mobility

  • Signature Moisture Transport System wicks sweat

  • ColdGear Infrared printed interior traps heat

$54.99 - $59.99
Under Armour Men's ColdGear Infrared EVO Legging

Under Armour Men's ColdGear Infrared EVO Legging

Key Features
  • 87% polyester, 13% elastane ColdGear fabric

  • Slick, fast-drying exterior; soft, cozy interior

  • Four-way stretch fabrication for maximum mobility

  • Signature Moisture Transport System wicks sweat

  • ColdGear Infrared printed interior traps heat

$54.99 - $59.99
Under Armour Men's Base 4.0 Legging

Under Armour Men's Base 4.0 Legging

Key Features
  • 92% polyester, 8% elastane ColdGear fabric

  • ArmourBlock antimicrobial finish reduces odors

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for ease of movement

  • Signature Moisture Transport System wicks sweat

$84.99
Terramar Men's Tech Skins Long-Sleeve Crew Shirt

Terramar Men's Tech Skins Long-Sleeve Crew Shirt

Key Features
  • Rapid moisture-management technology

  • Spun rib construction for added comfort

  • Flatlock seams to elminate chafing

  • Double-knit flat back mesh construction

  • 100% polypropylene fabric

$19.99
$14.96
Under Armour Men's The Original 6" BoxerJock Boxer Brief

Under Armour Men's The Original 6" BoxerJock Boxer Brief

Key Features
  • 4.7-oz., 90% polyester/10% elastane fabric

  • Four-way stretch for mobility and shape retention

  • Signature Moisture Transport System wicks sweat

  • Anti-odor technology keeps you fresher longer

  • Flatlock seam construction helps reduce chafing

$20.00
Terramar Tech Skins Pant

Terramar Tech Skins Pant

Key Features
  • Rapid moisture-management technology

  • Spun rib construction for added comfort

  • Flatlock seams to elminate chafing

  • Double-knit flat back mesh construction

  • 100% polypropylene fabric

$19.99 - $22.99
$14.96
The North Face Men's FlashDry Long-Sleeve Crew Shirt

The North Face Men's FlashDry Long-Sleeve Crew Shirt

Key Features
  • Lightweight, breathable recycled polyester fabric

  • Embedded with FlashDry fibers for quicker drying

  • Built-in UPF 15 sun protection helps shield skin

  • Flatlock seaming throughout for reduced chafing

  • Raglan sleeves for increased ease of movement

$45.00
$24.94 - $29.96
Under Armour Men's Base 4.0 Long-Sleeve Crew Shirt

Under Armour Men's Base 4.0 Long-Sleeve Crew Shirt

Key Features
  • 92% polyester, 8% elastane ColdGear fabric

  • ArmourBlock antimicrobial finish reduces odors

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for ease of movement

  • Signature Moisture Transport System wicks sweat

$84.99
Terramar Men's Military Fleece 3.0 Pant

Terramar Men's Military Fleece 3.0 Pant

Key Features
  • Lightweight, breathable 100% polyester microfleece

  • Antimicrobial treatment to help reduce odors

  • Built-in UPF 50+ sun protection shields your skin

  • ec2 Qwik-Dri Thermoregulation Comfort Technology

  • Flatlock seams reduce chafing, allow easy layering

$29.99 - $34.99
$19.96
Guide Series Men's Boxer Brief

Guide Series Men's Boxer Brief

Key Features
  • Ultra-lightweight 86% polyester/14% spandex blend

  • Full elastic waistband for a comfortable fit

  • Functional mesh front fly for easy wearing

$14.99
Terramar Men's Military Fleece 3.0 Long-Sleeve Crew Shirt

Terramar Men's Military Fleece 3.0 Long-Sleeve Crew Shirt

Key Features
  • Lightweight, breathable 100% polyester microfleece

  • Antimicrobial treatment to help reduce odors

  • Built-in UPF 50+ sun protection shields your skin

  • ec2 Qwik-Dri Thermoregulation Comfort Technology

  • Flatlock seams reduce chafing, allow easy layering

$29.99 - $34.99
$19.96
Under Armour Men's Extreme Base Baselayer Bottom

Under Armour Men's Extreme Base Baselayer Bottom

Key Features
  • Moisture-wicking 100% polyester shell

  • High-pile fleece lining for superior warmth

  • UA Scent Control; ArmourBlock anti-odor treatment

  • Strategic stretch panels offer an improved fit

  • Off-axis set waistband for additional coverage

$89.99
$79.99
Under Armour Men's Base 2.0 Legging

Under Armour Men's Base 2.0 Legging

Key Features
  • 95% polyester, 5% elastane ColdGear fabric

  • ArmourBlock antimicrobial finish reduces odors

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for ease of movement

  • Signature Moisture Transport System wicks sweat

$54.99
Guide Series Men's Guardian Pro Lightweight Pant

Guide Series Men's Guardian Pro Lightweight Pant

Key Features
  • Super-soft 91% modal, 9% spandex fabric blend

  • Wicks moisture away from the skin to keep you dry

  • Fabric generates heat for long-wearing comfort

  • Antimicrobial treatment to help reduce odors

  • Flatlock seam construction eliminates chafing

$29.99
$19.99
5.11 Tactical Men's Performance 6" Brief

5.11 Tactical Men's Performance 6" Brief

Key Features
  • Quick-drying 86% polyester, 14% spandex tricot

  • Wicks away moisture to keep you dry

  • Antimicrobial properties help reduce odors

  • Extra-wide 1.5" elasticized waistband

  • Flatlock seaming helps reduce chafing

$24.99 - $29.99
Under Armour Men's Camo 6" BoxerJock 2.0 Boxer Brief

Under Armour Men's Camo 6" BoxerJock 2.0 Boxer Brief

Key Features
  • Lightweight 90% polyester, 10% elastane fabric

  • Dries quickly, wicks moisture, has lots of stretch

  • ArmourBlock antimicrobial finish reduces odors

  • Breathable mesh front panel; functional fly

  • Branded elastic waistband for distinctive style

$29.99
Under Armour Men's Base 3.0 Legging

Under Armour Men's Base 3.0 Legging

Key Features
  • 92% polyester, 8% elastane ColdGear fabric

  • ArmourBlock antimicrobial finish reduces odors

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for ease of movement

  • Signature Moisture Transport System wicks sweat

$74.99
Guide Series Men's Guardian Pro Lightweight Long-Sleeve Crew Tee

Guide Series Men's Guardian Pro Lightweight Long-Sleeve Crew Tee

Key Features
  • Super-soft 91% modal, 9% spandex fabric blend

  • Wicks moisture away from the skin to keep you dry

  • Fabric generates heat for long-wearing comfort

  • Antimicrobial treatment to help reduce odors

  • Flatlock seam construction eliminates chafing

$29.99
$19.99
Carhartt Men's Heavyweight Cotton Thermal Bottom

Carhartt Men's Heavyweight Cotton Thermal Bottom

Key Features
  • 9.5 oz., 100% cotton ring-sun knit

  • Moisture-wicking fabric for comfort

  • Reinforced stitching on all seams

  • Elastic waist with Carhartt logo

$29.99 - $32.99
Under Armour Men's Base 2.0 Long-Sleeve Crew Shirt

Under Armour Men's Base 2.0 Long-Sleeve Crew Shirt

Key Features
  • 95% polyester, 5% elastane ColdGear fabric

  • ArmourBlock antimicrobial finish reduces odors

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for ease of movement

  • Signature Moisture Transport System wicks sweat

$54.99
Carhartt Men's Heavyweight Cotton Thermal Crew Neck Top

Carhartt Men's Heavyweight Cotton Thermal Crew Neck Top

Key Features
  • 9.5 oz., 100% cotton ring-sun knit

  • Moisture-wicking fabric for comfort

  • Reinforced stitching on all seams

  • Comfortable tagless neck label

$29.99 - $32.99
Guide Series Men's Guardian Pro Heavyweight Pant

Guide Series Men's Guardian Pro Heavyweight Pant

Key Features
  • Smooth exterior; soft, brushed interior

  • Antimicrobial finish to help reduce odors

  • Wicks away moisture to keep you comfy and dry

  • Flatlock seam construction helps reduce chafing

  • Soft elastic waistband; functional front fly

$49.99
Guide Series Men's Guardian Pro Heavyweight Quarter-Zip Pullover

Guide Series Men's Guardian Pro Heavyweight Quarter-Zip Pullover

Key Features
  • Smooth exterior; soft, brushed interior

  • Antimicrobial finish to help reduce odors

  • Wicks away moisture to keep you comfy and dry

  • Flatlock seam construction helps reduce chafing

  • Mock-neck collar; quarter-length front zipper

$49.99
Under Armour Men's Extreme Base Baselayer Top

Under Armour Men's Extreme Base Baselayer Top

Key Features
  • Moisture-wicking 100% polyester shell

  • High-pile fleece lining for superior warmth

  • UA Scent Control; ArmourBlock anti-odor treatment

  • Strategic stretch panels offer an improved fit

  • Mock-neck collar; quarter-length front zipper

$89.99
$79.99
Carhartt Men's Base Force Extremes Cold-Weather Long-Sleeve Top

Carhartt Men's Base Force Extremes Cold-Weather Long-Sleeve Top

Key Features
  • FastDry technology embedded with 37.5 particles

  • Speeds up the conversion of moisture to vapor

  • Fights unwanted odors to keep you fresher longer

  • Smooth flatlock seams; tagless neck label

  • Crew-neck collar; drop-tail hem in back

$39.99 - $42.99
Carhartt Midweight Cotton Union Suit (Style #K226)

Carhartt Midweight Cotton Union Suit (Style #K226)

Key Features
  • 8-ounce, 100% cotton ring-spun knit

  • Reinforced stitching on all seams

  • Back opening with button closure

  • Rib-knit neck and cuffs

$49.99 - $52.99
Browning Men's NTS Upland Shirt

Browning Men's NTS Upland Shirt

Key Features
  • NTS (Next To Skin) base layer fabric technology

  • OdorSmart encapsulated silver ion technology

  • VisaEndurance antimicrobial treatment

  • Wicks away moisture for quick evaporation

$39.99
Terramar Men's Authentic 2-Layer Long-Sleeve Thermal Crew Shirt

Terramar Men's Authentic 2-Layer Long-Sleeve Thermal Crew Shirt

Key Features
  • Rapid moisture-management technology

  • 2-layer construction for optimum insulation

  • Antimicrobial-treated to help reduce odor

  • ec2 Qwik-Dri Thermoregulation Comfort Technology

  • 100% polyester fabric

$24.99 - $29.99
$19.96
Terramar Men's Authentic 2-Layer Thermal Bottom

Terramar Men's Authentic 2-Layer Thermal Bottom

Key Features
  • Rapid moisture-management technology

  • 2-layer construction for optimum insulation

  • Antimicrobial-treated to help reduce odor

  • ec2 Qwik-Dri Thermoregulation Comfort Technology

  • 100% polyester fabric

$24.99
$19.96
Terramar Men's 2-Layer Merino Wool Pant

Terramar Men's 2-Layer Merino Wool Pant

Key Features
  • Thermal layers trap warm air to keep you warm

  • UPF 50+

  • ec2 Qwik-Dri Thermoregulation Technology

  • 180g: medium weight

  • Ribbed spandex trim

$29.99
Carhartt Men's Base Force Extremes Cold-Weather Quarter-Zip Pullover

Carhartt Men's Base Force Extremes Cold-Weather Quarter-Zip ...

Key Features
  • FastDry technology embedded with 37.5 particles

  • Speeds up the conversion of moisture to vapor

  • Fights unwanted odors to keep you fresher longer

  • Mock-neck collar; quarter-length front zipper

  • Smooth flatlock seams; tagless neck label

$44.99 - $47.99

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