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Under Armour > Apparel > Men's Apparel > Men's Base Layer >

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Extra 25% Off All Clearance Apaprel & Footwear

Outfit yourself in the right clothes for your next adventure. Our rainwear and outerwear will keep you dry and warm, while our baselayers help you prepare for changing temps. You'll find performance and tactical clothes from Beretta, Under Armour and 5.11 Tactical, fishing clothes from Columbia, and more apparel from The North Face, Marmot, and Carhartt.

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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

$44.96 - $59.99
Under Armour Camo Capture Scent Tech Legging

Under Armour Camo Capture Scent Tech Legging

Key Features
  • Capture Scent technology reduces human odors

  • Moisture management system helps keep you dry

  • Flatlock stitching eliminates abrasion

  • 65% nylon, 19% polyester, 16% elastane fabric

$74.99
$49.96
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

$42.96 - $59.99
Under Armour Men's Base 4.0 Legging

Under Armour Men's Base 4.0 Legging

Key Features
  • Rugged 96% polyester, 4% elastane ColdGear fabric

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for maximum mobility

  • ArmourBlock antimicrobial technology fights odors

  • Signature Moisture Transport System wicks sweat

$84.99 - $94.99
Under Armour Men's Extreme Base Baselayer Top

New! 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
Under Armour Men's Extreme Base Baselayer Bottom

New! 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
Under Armour Men's The Original 9" Boxerjock Boxer Briefs

Under Armour Men's The Original 9" Boxerjock Boxer Briefs

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

  • Four-way stretch properties for increased mobility

  • Signature Moisture Transport System wicks sweat

  • ArmourBlock antimicrobial technology fights odors

  • Smooth flatlock seams help reduce chafing

$20.00
Under Armour Men's Ridge Reaper Boxerjock Boxer

Under Armour Men's Ridge Reaper Boxerjock Boxer

Key Features
  • Made of 90% polyester/10% elastane fabric

  • HeatGear fabric designed to keep you cool

  • Moisture Transport System wicks away sweat

  • 4-Way Stretch fabric for greater mobility

  • Anti-Odor technology blocks odor-causing bacteria

$29.99
Under Armour Men's The Original 6" Boxerjock

Under Armour Men's The Original 6" Boxerjock

Key Features
  • 4-way stretch 88% polyester, 12% elastane

  • HeatGear technology: cool, dry, and light

  • Superior moisture transport

  • ArmourBlock anti-odor technology helps reduce odor

  • Tagless interior

$19.99 - $20.00
Under Armour Men's EVO ColdGear Mock-Neck Shirt

Under Armour Men's EVO ColdGear Mock-Neck Shirt

Key Features
  • Fitted very close to the body

  • ArmourBlock odor-reduction technology

  • UPF 30+ sun protection rating

  • Two-layer brushed fabric

$49.99
$39.96
Under Armour Tech Men's Short-Sleeve Crew-Neck Tee

Under Armour Tech Men's Short-Sleeve Crew-Neck Tee

Key Features
  • Ultra-lightweight UA Tech fabric

  • Superior HeatGear moisture transport

  • Soft cotton-like hand feel

  • 95% polyester, 5% spandex blend

  • Raglan sleeve construction with flatlock seams

$19.96
Under Armour Men's EVO ColdGear Legging

Under Armour Men's EVO ColdGear Legging

Key Features
  • Fitted very close to the body

  • ArmourBlock odor-reduction technology

  • UPF 30+ sun protection rating

  • Two-layer brushed fabric

$49.99 - $54.99
$39.96
Under Armour Men's Base 4.0 Long-Sleeve Crew Shirt

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

Key Features
  • Rugged 96% polyester, 4% elastane ColdGear fabric

  • Soft, brushed negative grid interior traps hot air

  • Four-way stretch fabrication for maximum mobility

  • ArmourBlock antimicrobial technology fights odors

  • Signature Moisture Transport System wicks sweat

$84.99
Under Armour Men's Base 2.0 Crew

Under Armour Men's Base 2.0 Crew

Key Features
  • 4.9-oz. 93% polyester, 7% elastane w/4-way stretch

  • Base 2.0: highly versatile for "cold" conditions

  • ColdGear technology: warm, dry, and light

  • ArmourBlock anti-odor technology helps reduce odor

  • Ergonomic flatlock seams and raglan sleeves

$54.99
$39.96
Under Armour Men's Base 3.0 Long-Sleeve Crew Shirt

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

Key Features
  • Rugged 93% polyester, 7% elastane ColdGear fabric

  • Patented negative grid interior traps hot air

  • Four-way stretch fabrication for maximum mobility

  • ArmourBlock antimicrobial technology fights odors

  • Signature Moisture Transport System wicks sweat

$74.99 - $84.99
Under Armour Men's Base 3.0 1/4-Zip Shirt

Under Armour Men's Base 3.0 1/4-Zip Shirt

Key Features
  • 7-oz. 93% polyester, 7% elastane w/4-way stretch

  • Base 3.0: max warmth for "extreme" cold conditions

  • ColdGear technology: warm, dry, and light

  • ArmourBlock anti-odor technology helps reduce BO

  • Ergonomic flatlock seams and raglan sleeves

$84.99 - $94.99
$59.96
Under Armour Men's Base 3.0 Crew

Under Armour Men's Base 3.0 Crew

Key Features
  • 7-oz. 93% polyester, 7% elastane w/4-way stretch

  • Base 3.0: max warmth for "extreme" cold conditions

  • ColdGear technology: warm, dry, and light

  • ArmourBlock anti-odor technology helps reduce BO

  • Ergonomic flatlock seams and raglan sleeves

$74.99
$59.96
Under Armour Men's Base 3.0 Legging

Under Armour Men's Base 3.0 Legging

Key Features
  • 7-oz. 93% polyester, 7% elastane w/4-way stretch

  • Base 3.0: max warmth for "extreme" cold conditions

  • ColdGear technology: warm, dry, and light

  • ArmourBlock anti-odor technology helps reduce BO

  • Ergonomic flatlock seams and performance waistband

$74.99
$54.96
Under Armour UA Base 3.0 ColdGear Crew Shirt

Under Armour UA Base 3.0 ColdGear Crew Shirt

Key Features
  • Engineered for maximum warmth

  • Superior mobility without chafing

  • Quick-drying fabric

  • 95% polyester, 5% elastane construction

$69.99
$49.96
Under Armour Men's Base 4.0 Crew

Under Armour Men's Base 4.0 Crew

Key Features
  • 4-way stretch, 7.25-oz. 96% polyester, 4% elastane

  • Base 4.0: ultra warmth for "brutally" cold weather

  • ColdGear technology: warm, dry, and light

  • ArmourBlock anti-odor technology helps reduce BO

  • Ergonomic flatlock seams and raglan sleeves

$84.99
$79.96

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