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Thermal Underwear

Thermal underwear (aka long johns) from Duofold and Carhartt deliver superior insulation, moisture management and comfort to all outdoor enthusiasts. Duofold and Carhartt long underwear are superior base layer underwear that keep you warm and comfortable in the toughest conditions.
   78 items (showing 1 to 50)    Page 1 of 2       1  2    Next >>     Show All
Carhartt Men's Heavyweight Cotton Thermal Crew Neck Top-IRREGULAR K228IRR
Carhartt Men's Heavyweight Cotton Thermal Crew Neck Top-IRREGULAR
K228IRR
Carhartt's superior comfort, warmth and durability, our heavyweight cotton thermal crew neck top is built with fabric that is 30% heavier....
Save 38%
Retail price $29.00
Our price $22.99
Sale price $17.99
  Available colors
       Black


Big and Tall sizes available
 
Carhartt Men's Heavyweight Cotton Thermal Bottom-IRREGULAR K229IRR
Carhartt Men's Heavyweight Cotton Thermal Bottom-IRREGULAR
K229IRR
With fabric that is 30% heavier than most other thermals, our heavyweight cotton thermal bottom helps keep you warm no matter how long you remain outside...
Save 38%
Retail price $29.00
Our price $22.99
Sale price $17.99
  Available colors
       Black


Big and Tall sizes available
 
Duofold Men's Mid Weight Two-Layer Thermal Top 400T
Duofold Men's Mid Weight Two-Layer Thermal Top
400T
This original mid-weight, two-layer thermal fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low...
Save 33%
Retail price $33.00
Our price$21.98
  Available colors
       Blue Jean


Big and Tall sizes available
 
 
Duofold Men's  Varitherm  Mid-Weight Ankle Length Bottom 470B
Duofold Men's Varitherm Mid-Weight Ankle Length Bottom
470B
Mid-weight, jersey knit fabric provides ultimate moisture management and warmth for high activity in cold weather. Odor resistant fabric 360...
Save 15%
Retail price $26.00
Our price$21.99
  Available colors
       Black


Big and Tall sizes available
 
Carhartt Men's Midweight Cotton Union Suits K226
Carhartt Men's Midweight Cotton Union Suits
K226
The Carhartt Union Suit is a one-piece undergarment that keeps you warm, top and bottom. It's made of 100% comfortable, easy-breathing 8 oz. cotton and...
Save 24%
Retail price $42.00
Our price $36.99
Sale price $31.99
  Available colors
       Red

Minus33 Men's Chocorua Midweight Crew 705
Minus33 Men's Chocorua Midweight Crew
705
The finest of Merino Wool is put through Minus33's special process to create a garment that is washable, dryable, soft and supple....
Save 15%
Retail price $65.00
Our price$55.49
  Available colors
       Black
       True Red
       Charcoal Grey
       FOREST GREEN


Big and Tall sizes available
 
 
Minus33 Men's Katmai 100% Wool Expedition Weight Bottoms 709
Minus33 Men's Katmai 100% Wool Expedition Weight Bottoms
709
100% Merino Wool bottoms. Super comfortable and superior performance in the cold....
Save 15%
Retail price $95.00
Our price$80.99
  Available colors
       Black

Duofold Men's Varitherm Expedition Weight Long Sleeve Crew KEW1
Duofold Men's Varitherm Expedition Weight Long Sleeve Crew
KEW1
Duofold Varitherm long sleeve crew. Expedition weight for high-activity protection....
Save 13%
Retail price $40.00
Our price$34.99
  Available colors
       Black

Coldpruf Men's Expedition Performance Fleece Base Layer Bottom 85BOT
Coldpruf Men's Expedition Performance Fleece Base Layer Bottom
85BOT
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 31%
Retail price $26.00
Our price$17.99
  Available colors
       Black


Big and Tall sizes available
 
 
Coldpruf Men's Expedition Fleeced Base Layer Long Sleeve Crew Neck Top 85TOP
Coldpruf Men's Expedition Fleeced Base Layer Long Sleeve Crew Neck Top
85TOP
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 31%
Retail price $26.00
Our price$17.99
  Available colors
       Black


Big and Tall sizes available
 
Coldpruf Men's Platinum  Dual Layer Base Layer Bottom 95BOT
Coldpruf Men's Platinum Dual Layer Base Layer Bottom
95BOT
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 23%
Retail price $26.00
Our price$19.99
  Available colors
       Black


Big and Tall sizes available
 
Coldpruf Men's Platinum  Dual Layer Long Sleeve Base Layer Top 95TOP
Coldpruf Men's Platinum Dual Layer Long Sleeve Base Layer Top
95TOP
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 23%
Retail price $26.00
Our price$19.99
  Available colors
       Black


Big and Tall sizes available
 
 
Carhartt Midweight Cotton Union Suits - Irregular K226IRR
Carhartt Midweight Cotton Union Suits - Irregular
K226IRR
The Carhartt Union Suit is a one-piece undergarment that keeps you warm, top and bottom. It's made of 100% comfortable, easy-breathing 8 oz. cotton....
Save 45%
Retail price $42.00
Our price $36.99
Sale price $22.99
  Available colors
       Red

Minus33 Men's Kancamangus Midweight Bottoms 706
Minus33 Men's Kancamangus Midweight Bottoms
706
Minus33 Merino Wool Thermal Bottom The finest of Merino Wool is put through our special process to create a garment that is washable, dryable and so...
Save 15%
Retail price $65.00
Our price$55.49
  Available colors
       FOREST GREEN
       Charcoal Grey
       True Red
       Denim Heather
       Black


Big and Tall sizes available
 
Minus33 Men's Yukon 100% Wool Expedition Weight Crew Neck 707
Minus33 Men's Yukon 100% Wool Expedition Weight Crew Neck
707
100% Merino Wool, Flatlock seams for comfort....
Save 15%
Retail price $95.00
Our price$80.99
  Available colors
       Black

 
Carhartt Men's Base Force Cool Weather Weight Crew Neck Top 100646
Carhartt Men's Base Force Cool Weather Weight Crew Neck Top
100646
NEW from Carhartt. When it's cold outside reach for Carhartt's cool weather weight crew neck top and stay warm....
Save 50%
Retail price $60.00
Our price$29.99
  Available colors
       Black


Big and Tall sizes available
 
Duofold Men's Mid Weight Two-Layer Thermal Bottom 400B
Duofold Men's Mid Weight Two-Layer Thermal Bottom
400B
This original mid-weight, two-layer thermal fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low...
Save 27%
Retail price $30.00
Our price$21.98
  Available colors
       Blue Jean


Big and Tall sizes available
 
Duofold Men's Mid Weight Two-Layer Original Union Suit 400F
Duofold Men's Mid Weight Two-Layer Original Union Suit
400F
Originals mid weight, two-layer fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low activity....
Save 24%
Retail price $62.00
Our price$46.99
  Available colors
       Red


Big and Tall sizes available
 
 
Carhartt Men's Base Force Cool Weather Weight Bottom 100642
Carhartt Men's Base Force Cool Weather Weight Bottom
100642
NEW from Carhartt. Carhartt's Base Force cool weather weight bottom...
Save 50%
Retail price $60.00
Our price$29.99
  Available colors
       Black


Big and Tall sizes available
 
Carhartt Men's Base Force Cold Weather Weight Bottom 100643
Carhartt Men's Base Force Cold Weather Weight Bottom
100643
NEW from Carhartt. Carhartt's Base Force cool weather weight bottom....
Save 33%
Retail price $60.00
Our price$39.99
  Available colors
       Black


Big and Tall sizes available
 
Duofold Men's Varitherm Mid-Weight Long Sleeve Crew 470T
Duofold Men's Varitherm Mid-Weight Long Sleeve Crew
470T
Mid-weight, jersey knit fabric provides ultimate moisture management and warmth for high activity in cold weather. Odor resistant fabric 360...
Save 15%
Retail price $26.00
Our price$21.99
  Available colors
       Black


Big and Tall sizes available
 
 
Minus33 Men's Chocorua Midweight Crew 705-1
Minus33 Men's Chocorua Midweight Crew
705-1
The finest of Merino Wool is put through Minus33's special process to create a garment that is washable, dryable, soft and supple....
Save 15%
Retail price $81.00
Our price$68.99
  Available colors
       Mossy Oak Break-up

Duofold Men's Varitherm Expedition Weight Ankle Length Bottom KEW2
Duofold Men's Varitherm Expedition Weight Ankle Length Bottom
KEW2
Duofold Varitherm ankle length bottom. Expedition weight for high-activity protection....
Save 13%
Retail price $40.00
Our price$34.99
  Available colors
       Black

Duofold Men's Varitherm Base-Weight Long Sleeve Crew KTR1
Duofold Men's Varitherm Base-Weight Long Sleeve Crew
KTR1
Duofold Varitherm long sleeve crew. Lightweight base layer designed for the outdoor athlete....
Save 20%
Retail price $25.00
Our price$19.99
  Available colors
       Black

 
Duofold Men's Varitherm Base-Weight Ankle Length Bottom KTR2
Duofold Men's Varitherm Base-Weight Ankle Length Bottom
KTR2
Duofold Varitherm ankle length bottom. Lightweight base layer designed for the outdoor athlete....
Save 20%
Retail price $25.00
Our price$19.99
  Available colors
       Black

Duofold Women's Varitherm Base-Weight Ankle Length Bottom KTR4
Duofold Women's Varitherm Base-Weight Ankle Length Bottom
KTR4
Duofold Women's Varitherm ankle length bottom. Lightweight base layer designed for the outdoor athlete....
Save 20%
Retail price $25.00
Our price$19.99
  Available colors
       Black

Coldpruf Men's Authentic Wool Plus Dual Layer Base Layer Bottom 92BOT
Coldpruf Men's Authentic Wool Plus Dual Layer Base Layer Bottom
92BOT
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 17%
Retail price $29.00
Our price$23.99
  Available colors
       Oatmeal


Big and Tall sizes available
 
 
Coldpruf Men's Authentic Wool Plus Dual Layer Long Sleeve Base Layer Top 92TOP
Coldpruf Men's Authentic Wool Plus Dual Layer Long Sleeve Base Layer Top
92TOP
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 17%
Retail price $29.00
Our price$23.99
  Available colors
       Oatmeal


Big and Tall sizes available
 
Columbia Women's Baselayer Midweight Long Sleeve Top AL6654
Columbia Women's Baselayer Midweight Long Sleeve Top
AL6654
The perfect first layer for winter snow sports, these tights offer maximum warmth, minimum weight, and zoned performance for optimal comfort....
Save 17%
Retail price $60.00
Our price$49.99
  Available colors
       Black

Columbia Men's Baselayer Midweight Long Sleeve Top AM6944
Columbia Men's Baselayer Midweight Long Sleeve Top
AM6944
This midweight top is the ideal all-day baselayer for aerobic activity. Finely tuned ergonomic seaming cuts a sleek, comfortable-wearing silhouette....
Save 9%
Retail price $55.00
Our price$49.99
  Available colors
       Black

 
Hot Chillys Women's Pepper Stretch Crew PL8020
Hot Chillys Women's Pepper Stretch Crew
PL8020
Hot Chillys Women's Pepper Collection Body Fit Crew Warmth Factor 7Base layering is a fundamental component to keeping warm and staying dry. This...
Save 22%
Retail price $45.00
Our price$34.99
  Available colors
       Black

Carhartt Men's Heavyweight Cotton Thermal Bottom K229
Carhartt Men's Heavyweight Cotton Thermal Bottom
K229
With fabric that is 30% heavier than most other thermals, our heavyweight cotton thermal bottom helps keep you warm no matter how long you remain outside...
Save 33%
Retail price $30.00
Our price $24.99
Sale price $19.99
  Available colors
       Black


Big and Tall sizes available
 
Minus33 Merino Wool Midweight Neck Gaiter 730
Minus33 Merino Wool Midweight Neck Gaiter
730
Make sure you get that extra neck protection and look great wearing a Minus33 neck gaitor. A necessity for men and women in frigid temperatures....
Save 14%
Retail price $22.00
Our price$18.99
  Available colors
       Black

 
Minus33 Merino Wool Expedition Balaclava 740
Minus33 Merino Wool Expedition Balaclava
740
Get maximum warmth and look great wearing a Minus33 Expedition balaclava. A stylish accessory for men or women....
Save 13%
Retail price $30.00
Our price$25.99
  Available colors
       Black

Minus33 Women's Kenai Expedition Bottoms 809
Minus33 Women's Kenai Expedition Bottoms
809
Minus33 Women's Kenai Expedition Bottoms. A product suitable for the coldest climates. Super comfortable and superior performance in the cold....
Save 15%
Retail price $95.00
Our price$80.99
  Available colors
       Black

Duofold Men's Mid Weight Two-Layer Everyday Thermal  Top 620T
Duofold Men's Mid Weight Two-Layer Everyday Thermal Top
620T
Designed for to include a wide variety of low-activity occasions. The two-layer thermal combines the softness of cotton with the performance of polyester...
Save 17%
Retail price $18.00
Our price$14.99
  Available colors
       White


Big and Tall sizes available
 
 
Duofold Women's Mid Weight Two-Layer Thermal  Bottom 401B
Duofold Women's Mid Weight Two-Layer Thermal Bottom
401B
This originals mid-weight, two-layer fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low...
Save 27%
Retail price $30.00
Our price$21.98
  Available colors
       Winter White

Carhartt Men's Base Force Super-Cold Weather Quarter -Zip Top 101301
Carhartt Men's Base Force Super-Cold Weather Quarter -Zip Top
101301
NEW from Carhartt. Carhartt's Base Force Super-Cold Weather Quarter-Zip top....
Save 17%
Retail price $60.00
Our price$49.99
  Available colors
       Black


Big and Tall sizes available
 
Coldpruf Men's Authentic Dual Layer Base Layer Bottom 93BOT
Coldpruf Men's Authentic Dual Layer Base Layer Bottom
93BOT
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 19%
Retail price $27.00
Our price$21.99
  Available colors
       Navy


Big and Tall sizes available
 
 
Coldpruf Men's Authentic Dual Layer Long Sleeve Base Layer Top 93TOP
Coldpruf Men's Authentic Dual Layer Long Sleeve Base Layer Top
93TOP
COLDPRUF® Base Layer products offer warmth and comfort in all cold weather environments, whether you are at home, on the job, or outdoors....
Save 19%
Retail price $27.00
Our price$21.99
  Available colors
       Navy


Big and Tall sizes available
 
Columbia Men's Baselayer Heavyweight Tight with Fly AM8109
Columbia Men's Baselayer Heavyweight Tight with Fly
AM8109
Columbia’s new heavyweight baselayers offer our highest warmth-to-weight ratio for optimal comfort in extreme winter conditions....
Save 29%
Retail price $70.00
Our price $59.99
Sale price $49.99
  Available colors
       Black

Columbia Men's Baselayer Midweight Tight with Fly AM8111
Columbia Men's Baselayer Midweight Tight with Fly
AM8111
Omni-Heat thermal reflective lining for lightweight, breathable warmth...
Save 9%
Retail price $55.00
Our price$49.99
  Available colors
       Black

 
Duofold Women's Mid Weight Two-Layer Thermal Top 401T
Duofold Women's Mid Weight Two-Layer Thermal Top
401T
This originals mid-weight, two-layer fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low...
Save 27%
Retail price $30.00
Our price$21.98
  Available colors
       Winter White

Duofold Men's Mid Weight Two-Layer Everyday Thermal  Bottom 620B
Duofold Men's Mid Weight Two-Layer Everyday Thermal Bottom
620B
Mid weight two-layer Thermals combine the softness of cotton with the performance of polyester - perfect for lower levels of aerobic activity. Designed to...
Save 17%
Retail price $18.00
Our price$14.99
  Available colors
       White


Big and Tall sizes available
 
Duofold Women's  Mid Weight Two-Layer All-Purpose Thermal Bottom 627B
Duofold Women's Mid Weight Two-Layer All-Purpose Thermal Bottom
627B
Mid Weight two-layer Thermals combine the softness of cotton with the performance of polyester - perfect for lower levels of aerobic activity. Designed...
Save 17%
Retail price $18.00
Our price$14.99
  Available colors
       White

 
Duofold Women's Varitherm Base-Weight Long Sleeve Crew KTR3
Duofold Women's Varitherm Base-Weight Long Sleeve Crew
KTR3
Duofold Women's Varitherm long sleeve crew. Lightweight base layer designed for the outdoor athlete....
Save 20%
Retail price $25.00
Our price$19.99
  Available colors
       Black

Hot Chillys Men's Pepper Double Layer Crew PB3071
Hot Chillys Men's Pepper Double Layer Crew
PB3071
Hot Chillys Men's Pepper Double Layer Crew Long Underwear Warmth Factor 7Base layering is a fundamental component to keeping warm and staying dry. This...
Save 25%
Retail price $40.00
Our price$29.99
  Available colors
       Black

Hot Chillys Men's Pepper Double Layer Bottom PB3073
Hot Chillys Men's Pepper Double Layer Bottom
PB3073
Hot Chillys Men's Pepper Relaxed Fit Bottom Warmth Factor 7Base layering is a fundamental component to keeping warm and staying dry. This relaxed fit...
Save 25%
Retail price $40.00
Our price$29.99
  Available colors
       Black

 
Hot Chillys Men's Pepper Stretch Crew PL8021
Hot Chillys Men's Pepper Stretch Crew
PL8021
Hot Chillys Men's Pepper Body Fit Crew Warmth Factor 7Base layering is a fundamental component to keeping warm and staying dry. This stretch fit wicking...
Save 22%
Retail price $45.00
Our price$34.99
  Available colors
       Black

Hot Chillys Women's Pepper Body Fit Bottom PL8022
Hot Chillys Women's Pepper Body Fit Bottom
PL8022
Hot Chillys Women's Pepper Stretch Fit Bottom Warmth Factor 7Base layering is a fundamental component to keeping warm and staying dry. This relaxed fit...
Save 22%
Retail price $45.00
Our price$34.99
  Available colors
       Black

   78 items (showing 1 to 50)    Page 1 of 2       1  2    Next >>     Show All

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