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

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

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 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

3 colors available
$49.99 - $64.99
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

3 colors available
$19.99 - $24.99
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

3 colors available
$49.99 - $54.99
Under Armour Long-Sleeve Mock With Capture Scent Technology

Under Armour Long-Sleeve Mock With Capture Scent Technology

Key Features
  • Nylour, PolyArmour, elastane

  • ColdGear double-knit fabric

  • Capture Scent Technology

  • Moisture-wicking properties

  • Compression fit

$74.99
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
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
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

2 colors available
$19.99 - $24.99
Under Armour Men's Evolution HG Compression Long-Sleeve Shirt

Under Armour Men's Evolution HG Compression Long-Sleeve Shirt

Key Features
  • Super-soft, lightweight, 4-way stretch fabric

  • HeatGear technology keeps you cool, dry, light

  • ArmourBlock neutralizes odor-causing microbes

  • Anti-pick, anti-pill treated for long-lasting wear

  • 100% recycled polyester fabric construction

2 colors available
$44.99
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

2 colors available
$54.99
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
Under Armour Men's UA Base 3.0 ColdGear Leggings

Under Armour Men's UA Base 3.0 ColdGear Leggings

Key Features
  • Engineered for maximum warmth

  • Superior mobility without chafing

  • Quick-drying fabric

$69.99
Under Armour Tech Men's Long-Sleeve Crew-Neck Tee

Under Armour Tech Men's Long-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

3 colors available
$24.99 - $29.99
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
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 - $84.99
Under Armour Men's UA Base 2.0 ColdGear Crew Shirt

Under Armour Men's UA Base 2.0 ColdGear Crew Shirt

Key Features
  • Lightweight ColdGear thermal grid fabric

  • Keeps body heat in, transport moisture away

  • Ergonomic flatlock seams for chafe-free comfort

  • Raglan sleeve design for optimum mobility

  • ArmourBlock antimicrobial technology reduces odor

$49.99
Under Armour Men's Base 2.0 Legging

Under Armour Men's Base 2.0 Legging

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 performance waistband

$54.99 - $64.99
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
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
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

2 colors available
$19.99 - $24.99
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 - $84.99

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