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Thermal Underwear


Warm Thermal underwear is essential to your comfort in cold weather. Nothing will keep you warmer in winter or cold weather than the right thermal base layer next to your skin. Cotton or Polypro long underwear traps heat from your body forming a layer of warmth next to your skin. To maximize your warmth, you need the right thermal underwear fabric for your environment and level of activity. Polypropylene is a great synthetic thermal underwear fabric for high aerobic activity in cold weather. When you sweat, you want the perspiration to be pulled or wicked away from the skin by your thermal underwear and then dried as quickly as possible. Polypropylene thermal underwear does just that. It also retains its warmth even when it gets wet. If you prefer all natural thermal fabrics next to your skin then 100% merino wool is what you want. Merino wool is very soft, unlike regular wool. It has all of the same great insulating features of regular wool. You will pay more for merino wool thermal underwear, but you definitley get what you pay for in comfort, performance and quality. For extremely cold temperatures, you want our thicker cotton thermals or our fleece polypropylene underwear. All of our thermal underwear and winter clothing products are available year round!

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MEN'S LONG UNDERWEAR
WOMEN"S LONG UNDERWEAR

KID'S THERMAL UNDERWEAR

Black Heavy Weight Fleece Polypropylene Underwear

Black Heavy Weight Fleece Polypropylene Underwear

THESE ARE OUR WARMEST THERMALS! These are not the best looking or highest quality thermal underwear, but they are sure to keep you warm. Military...

$20.95

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Desert Sand 2 Layer Polypropylene Long Underwear

Desert Sand 2 Layer Polypropylene Long Underwear

These are Genuine U.S. Military Issue Polypropylene Thermals, a vital part of the Extended Cold Weather Clothing System(ECWCS). Heavy weight polypro...

$20.95

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Men's Coldpruf Merino Wool Blend Thermal Pant

Men's Coldpruf Merino Wool Blend Thermal Pant

PERFORMANCE THERMAL UNDERWEAR FOR: TEMPERATURE: VERY COLD TO EXTREME COLD / ACTIVITY: LOW TO MEDIUM The Authentic base layer thermal is a cozy 2...

$24.99

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Men's Coldpruf Merino Wool Blend Thermal Top

Men's Coldpruf Merino Wool Blend Thermal Top

PERFORMANCE THERMAL UNDERWEAR FOR: TEMPERATURE: VERY COLD TO EXTREME COLD / ACTIVITY: LOW TO MEDIUM The Authentic base layer thermal is a cozy 2...

$24.99

... more info

Mens Coldpruf Platinum Merino Wool Polyester Blend Pant, Grey

Mens Coldpruf Platinum Merino Wool Polyester Blend Pant, Grey

TEMPERATURE: COLD TO EXTREME COLD / ACTIVITY: MEDIUM TO HIGH The mens Platinum series thermal underwear from Coldpruf is designed for maximum comfort...

$22.95

... more info

Mens Coldpruf Platinum Merino Wool Polyester Blend Top, Grey

Mens Coldpruf Platinum Merino Wool Polyester Blend Top, Grey

TEMPERATURE: COLD TO EXTREME COLD / ACTIVITY: MEDIUM TO HIGH The mens Platinum Thermal Underwear series from Coldpruf is designed for maximum cold...

$22.95

... more info


Mens Coldpruf Platinum Merino Wool Polyester Blend Pant, Black

Mens Coldpruf Platinum Merino Wool Polyester Blend Pant, Black

TEMPERATURE: COLD TO EXTREME COLD / ACTIVITY: MEDIUM TO HIGH The mens Platinum series thermal underwear from Coldpruf is designed for maximum comfort...

$22.95

... more info

Mens Coldpruf Platinum Merino Wool Polyester Blend Top, Black

Mens Coldpruf Platinum Merino Wool Polyester Blend Top, Black

TEMPERATURE: COLD TO EXTREME COLD / ACTIVITY: MEDIUM TO HIGH The mens Platinum Thermal Underwear series from Coldpruf is designed for maximum cold...

$22.95

... more info

Men's Coldpruf Basic Base Layer Pant

Men's Coldpruf Basic Base Layer Pant

TEMPERATURE: COLD TO VERY COLD / ACTIVITY: LOW TO MEDIUM Our Men's basic baselayer thermal underwear is one of our softest thermals. The ribbed...

$14.99

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Men's Coldpruf Basic Base Layer Thermal Top

Men's Coldpruf Basic Base Layer Thermal Top

TEMPERATURE: COLD TO VERY COLD / ACTIVITY: LOW TO MEDIUM Our Men's basic baselayer thermal underwear is one of our softest thermals. You'll love the...

$14.99

... more info

Men's Coldpruf Extreme Performance Expedition Weight Mock Zip Top

Men's Coldpruf Extreme Performance Expedition Weight Mock Zip Top

BEST FOR EXTREME COLD-The EXTREME PERFORMANCE base layer thermal is constructed with 2 layers of CPT – COLDPRUF® TECHNICAL Fibers for WARMTH, MAXIMUM...

$43.95

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Men's Coldpruf Extreme Performance Expedition Weight Pant

Men's Coldpruf Extreme Performance Expedition Weight Pant

BEST FOR EXTREME COLD-The EXTREME PERFORMANCE base layer thermal is constructed with 2 layers of CPT – COLDPRUF® TECHNICAL Fibers for WARMTH, MAXIMUM...

$38.99

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Men's Coldpruf Extreme Performance Expedition Weight Top

Men's Coldpruf Extreme Performance Expedition Weight Top

BEST FOR EXTREME COLD-Our Exreme Performance base layer thermal underwear is constructed with 2 layers of CPT – COLDPRUF® TECHNICAL Fibers for...

$38.99

... more info

Men's Expedition Weight 100% Merino Wool Thermal Top

Men's Expedition Weight 100% Merino Wool Thermal Top

THESE ARE OUR WARMEST WOOL THERMALS.  Merino wool has in the last few years become the first choice of all avid outdoor enthusiasts for moisture and...

$79.99

... more info

Men's Expedition Weight 100% Merino Wool Underwear Pant

Men's Expedition Weight 100% Merino Wool Underwear Pant

THESE ARE OUR WARMEST WOOL THERMALS.  Merino wool has quickly become the choice of all avid outdoor enthusiasts. Merino wool thermal underwear is...

$79.99

... more info


Men's Mid Weight 100% Merino Wool Thermal Top

Men's Mid Weight 100% Merino Wool Thermal Top

Merino wool has in the last few years become the first choice of all avid outdoor enthusiasts for moisture and temperature management. Merino wool...

$59.99

... more info

Men's Mid Weight 100% Merino Wool Underwear Pant

Men's Mid Weight 100% Merino Wool Underwear Pant

Merino wool has quickly become the choice of all avid outdoor enthusiasts. Merino wool thermal underwear is super soft and does not itch like...

$59.99

... more info

Mens Coldpruf Single Layer 100% Polypropylene Crew Neck Top

Mens Coldpruf Single Layer 100% Polypropylene Crew Neck Top

The ENTHUSIAST is a single layer garment made of 100% Polypropylene. This design will give you a close, comfortable fit without restriction. The...

$17.99

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