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

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 Amour.

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Terramar Men's Military Fleece 3.0 Long-Sleeve Crew Shirt
Buy 1, Get 1 50% Off

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
Terramar Men's Military Fleece 3.0 Pant
Buy 1, Get 1 50% Off

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
Terramar Men's Authentic 2-Layer Thermal Bottom
Buy 1, Get 1 50% Off

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
Terramar Men's Authentic 2-Layer Long-Sleeve Thermal Crew Shirt
Buy 1, Get 1 50% Off

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
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
Terramar Tech Skins Pant
Buy 1, Get 1 50% Off

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
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 Quarter-Zip Pullover
Buy 1, Get 1 50% Off

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

$79.99 - $89.99
$59.99 - $67.49
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 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

$79.99 - $89.99
$59.99 - $67.49
Terramar Men's Tech Skins Long-Sleeve Crew Shirt
Buy 1, Get 1 50% Off

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 - $22.99
Under Armour Men's Base 4.0 Legging

New! 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
$63.74
Guide Series Men's Guardian Pro Heavyweight Pant
Buy 1, Get 1 50% Off

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

New! 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
$63.74
Under Armour Men's Base 2.0 Long-Sleeve Crew Shirt

New! 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
$41.24
Under Armour Men's Base 2.0 Legging

New! 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
$41.24
Guide Series Men's Guardian Pro Midweight Long-Sleeve Crew Tee
Buy 1, Get 1 50% Off

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

Key Features
  • Super-soft 86% polyester, 14% spandex fabric

  • 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

$39.99
GSX Men's Hyper-Formance Fleece Pant

GSX Men's Hyper-Formance Fleece Pant

Key Features
  • Heavyweight stretch fleece wicks away moisture

  • Antimicrobial treatment to help reduce odors

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

  • Full elastic waistband with interior drawcord

  • Welt hand pockets and a hidden zip-secure pocket

$34.99
$19.99
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
Terramar Men's 2-Layer Merino Wool Long-Sleeve Crew Shirt

Terramar Men's 2-Layer Merino Wool Long-Sleeve Crew Shirt

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

  • UPF 50+

  • ec2 Qwik-Dri Thermoregulation Technology

  • 180g: medium weight

  • Ribbed spandex trim

$38.50
$29.99
Guide Series Men's Guardian Pro Lightweight Pant
Buy 1, Get 1 50% Off

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
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
Under Armour Men's Base 3.0 Legging

New! 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
$56.24
Guide Series Men's Boxer Brief
Buy 1, Get 1 50% Off

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
Guide Series Men's Guardian Pro Midweight Pant
Buy 1, Get 1 50% Off

Guide Series Men's Guardian Pro Midweight Pant

Key Features
  • Soft, peached 86% polyester, 14% spandex fabric

  • Wicks moisture away from the skin to keep you dry

  • Antimicrobial treatment to help reduce odors

  • Flatlock seam construction helps reduce chafing

  • Soft elastic waistband; functional front fly

$39.99
Under Armour Men's Base 3.0 Long-Sleeve Crew Shirt

New! Under Armour Men's Base 3.0 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

$74.99
$56.24
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
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 - $44.99
Guide Series Men's Guardian Pro Lightweight Long-Sleeve Crew Tee
Buy 1, Get 1 50% Off

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
Carhartt Men's Base Force Extremes Cold-Weather Bottom

Carhartt Men's Base Force Extremes Cold-Weather Bottom

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 allow for easy layering

  • Full elastic waistband ensures a comfortable fit

$39.99 - $42.99

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