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

Select high-quality men's heavyweight long johns and thermal underwear bottoms with new fabrics and new styles. Performance fit baselayer with ergonomic seaming that wicks sweat and reflects body heat, all while the comfort stretch fabric moves with you as you bob and weave your way through the day's adventures. Our selection of heavyweight wear include, leggings, long sleeve crew neck shirt, 1/4 zip from excellent brands by Guide Series, Carhartt, GSX, and Under Amour.

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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
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
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
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
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
$37.49
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 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
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
$37.49
Under Armour Men's Base 3.0 Long-Sleeve Crew Shirt

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

New! Carhartt Men's Base Force Extremes Super-Cold Weather Long-...

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

  • Classic crew-neck collar for a snug, secure fit

  • Drop-tail hem for added coverage in back

$49.99 - $52.99
Carhartt Men's Quilted Base Layer Bottom

Carhartt Men's Quilted Base Layer Bottom

Key Features
  • Featherweight taffeta shell and lining

  • 80-gram polyfill insulation for ample warmth

  • Full elastic waistband with interior drawcord

  • Elastic at leg openings for a streamlined fit

$69.99 - $72.99
Carhartt Men's Base Force Extremes Super-Cold Weather Bottom

New! Carhartt Men's Base Force Extremes Super-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

  • Full elastic waistband for a comfortable fit

  • Tapered cuffs seal in body heat for added warmth

$49.99 - $52.99
Carhartt Men's Yukon Quilted Base Layer Top

Carhartt Men's Yukon Quilted Base Layer Top

Key Features
  • Featherweight taffeta shell and lining

  • 80-gram polyfill insulation for ample warmth

  • Mock-neck collar for extra cold-air protection

  • Snap-closed front placket for easy on and off

  • Stretch binding at the sleeve cuffs and bottom hem

$69.99 - $72.99
Carhartt Men's Base Force Extremes Super-Cold Weather Quarter-Zip Pullover

New! Carhartt Men's Base Force Extremes Super-Cold Weather ...

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

  • Drop-tail hem for added coverage in back

$54.99 - $57.99
Carhartt Men's 8 oz. Base Force Super Cold Weather Bottom

Carhartt Men's 8 oz. Base Force Super Cold Weather Bottom

Key Features
  • 8 oz., 100% polyester midweight knit

  • Force fabric wicks away moisture

  • Tapered cuffs for warmth and comfort

  • Elastic waist with Carhartt logo

$44.99 - $46.99
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
$64.96
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
$56.96
Carhartt Men's Base Force Flame-Resistant Cold Weather Bottom

Carhartt Men's Base Force Flame-Resistant Cold Weather Bottom

Key Features
  • Flame-Resistant 74% cotton/24% Rayon/2% spandex

  • FastDry technology wicks away sweat

  • Meets requirements of NFPA 70E

  • Flatlock Seams allow for ease of movement

  • Fights odor-causing bacteria for freshness

$58.99 - $68.99
Clam IceArmor Base Layer Top

Clam IceArmor Base Layer Top

Key Features
  • Comfortable brushed fleece lining

  • Smooth outside finish

  • Perfect first layer for ice fishing

  • Anti-microbial technology

  • 100% polyester

4 models to choose from
$34.99

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