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20 Best Wool Long Underwear (2022 Updated)

Wool long underwear is underwear made from wool. It is often worn as a layer of clothing to keep the body warm, especially in cold weather.

20 Best Wool Long Underwear

Product Image Product Name Features Price

First Lite Men's Kiln Long John

  • M

Stanfield's Charcoal Men's HeatFX Merino Wool Blend Thermal Long Johns

  • L

Coldpruf Men's Authentic Dual Layer Wool Plus Base Layer, Large / Navy

  • L

Men's Double-Layer Duofold Long Underwear, Pants Dark Indigo Medium, Wool Blend | L.L.Bean

  • M

Stanfield's Men's Thermal Heavy Weight Rib Knit Wool Long Johns Underwear Baselayer, Size: Small, Gray

  • S

Stanfield's HeatFX Merino-Wool-Blend Long Johns

  • XL

Danish Endurance Merino Wool Base Layer Pants for Women, Thermal Long Johns

  • 80% Wool, 20% Polyamide
  • Machine Wash

Woolx Men's Merino Wool Base Layer Bottoms-Heavyweight -Extremely

  • L

Smartwool Women's Classic Thermal Merino Base Layer Bottom – Blueberry Hill Heather

  • S

100% Merino Wool Kancamagus Men's Bottom – Midweight, Size: MT, Gray

  • M

Merino Full Length Base Layer | Black | BN3TH

  • XL

Badlands OVIS Long Underwear Bottom-Stone-Large

  • L

Smartwool Classic Thermal Merino Base Layer Pattern Bottom – Women's Black Dot, M

  • M

Smartwool Men's Classic Thermal Merino Base Layer Pattern Bottoms, XXL, Picante Heather Shift

  • 2XL

Rei Co-op Men's Merino 185 Base Layer Bottoms Tall Sizes Black XXL Tall

  • 2XL

BN3TH Merino Wool Full Length Base Layer : Spruce Green Camo

  • L

Mack Weldon Best WARMKNIT Long Underwear True Navy

  • XL

Women's Merino Wool Long Underwear Bottoms – Black – Large – The Vermont Country Store

  • L

Devold W's Breeze Long Johns – 100% Merino Wool

  • M

Old Navy Women's High-Waisted Ultrabase Merino Wool Base Layer Tights – – Size L

  • L
First Lite Men's Kiln Long John
  • M
Stanfield's Charcoal Men's HeatFX Merino Wool Blend Thermal Long Johns
  • L
Coldpruf Men's Authentic Dual Layer Wool Plus Base Layer, Large / Navy
  • L
Men's Double-Layer Duofold Long Underwear, Pants Dark Indigo Medium, Wool Blend | L.L.Bean
  • M
Stanfield's Men's Thermal Heavy Weight Rib Knit Wool Long Johns Underwear Baselayer, Size: Small, Gray
  • S
Stanfield's HeatFX Merino-Wool-Blend Long Johns
  • XL
Danish Endurance Merino Wool Base Layer Pants for Women, Thermal Long Johns
  • 80% Wool, 20% Polyamide
  • Machine Wash
Woolx Men's Merino Wool Base Layer Bottoms-Heavyweight -Extremely
  • L
Smartwool Women's Classic Thermal Merino Base Layer Bottom – Blueberry Hill Heather
  • S
100% Merino Wool Kancamagus Men's Bottom – Midweight, Size: MT, Gray
  • M
Merino Full Length Base Layer | Black | BN3TH
  • XL
Badlands OVIS Long Underwear Bottom-Stone-Large
  • L
Smartwool Classic Thermal Merino Base Layer Pattern Bottom – Women's Black Dot, M
  • M
Smartwool Men's Classic Thermal Merino Base Layer Pattern Bottoms, XXL, Picante Heather Shift
  • 2XL
Rei Co-op Men's Merino 185 Base Layer Bottoms Tall Sizes Black XXL Tall
  • 2XL
BN3TH Merino Wool Full Length Base Layer : Spruce Green Camo
  • L
Mack Weldon Best WARMKNIT Long Underwear True Navy
  • XL
Women's Merino Wool Long Underwear Bottoms – Black – Large – The Vermont Country Store
  • L
Devold W's Breeze Long Johns – 100% Merino Wool
  • M
Old Navy Women's High-Waisted Ultrabase Merino Wool Base Layer Tights – – Size L
  • L

1. First Lite Men’s Kiln Long John

First Lite Men's Kiln Long John

  • M

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Amazon.com – Seller
First Lite

Product Details

Specifications

Details
Care Instructions Machine Wash
Fit Type Fitted

Reviews From Real Customers

Thomas W.
George D.
Aaron W.

2. Stanfield’s Charcoal Men’s HeatFX Merino Wool Blend Thermal Long Johns

Stanfield's Charcoal Men's HeatFX Merino Wool Blend Thermal Long Johns

  • L

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Amazon.com
Macy’s
Tractor Supply Company
Belk

Product Details

Specifications

Details
Package Dimensions 1 x 1 x 1 inches; 1 Pounds

Reviews From Real Customers

Alex Hiddell
kennesurbe
Very comfortable

3. Coldpruf Men’s Authentic Dual Layer Wool Plus Base Layer, Large / Navy

Coldpruf Men's Authentic Dual Layer Wool Plus Base Layer, Large / Navy

  • L

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Amazon.com
eBay
Walmart – Essential Apparel
Frank’s Great Outdoors

Product Details

Specifications

Details
Care Instructions Machine Wash
Rise Style Mid Rise

Reviews From Real Customers

newenglandframer
oldefashioned
Jdg131

4. Men’s Double-Layer Duofold Long Underwear, Pants Dark Indigo Medium, Wool Blend | L.L.Bean

Men's Double-Layer Duofold Long Underwear, Pants Dark Indigo Medium, Wool Blend | L.L.Bean

  • M

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Amazon
L.L.Bean

Product Details

Specifications

Details
Size Range Regular

Reviews From Real Customers

Gene
Logan
Mrs AAA

5. Stanfield’s Men’s Thermal Heavy Weight Rib Knit Wool Long Johns Underwear Baselayer, Size: Small, Gray

Stanfield's Men's Thermal Heavy Weight Rib Knit Wool Long Johns Underwear Baselayer, Size: Small, Gray

  • S

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Amazon
Walmart
Belk

Product Details

Reviews From Real Customers

Homerville Oh

6. Stanfield’s HeatFX Merino-Wool-Blend Long Johns

Stanfield's HeatFX Merino-Wool-Blend Long Johns

  • XL

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Amazon
Tractor Supply Company
Belk

Product Details

7. Danish Endurance Merino Wool Base Layer Pants for Women, Thermal Long Johns

Danish Endurance Merino Wool Base Layer Pants for Women, Thermal Long Johns

  • 80% Wool, 20% Polyamide
  • Machine Wash

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Amazon
Danish Endurance

Product Details

Specifications

Details
Package Dimensions 11.42 x 9.06 x 0.79 inches; 6.84 Ounces

Reviews From Real Customers

Yi-fan
Maria
Trine B.

8. Woolx Men’s Merino Wool Base Layer Bottoms-Heavyweight -Extremely

Woolx Men's Merino Wool Base Layer Bottoms-Heavyweight -Extremely

  • L

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Amazon
Woolx

Product Details

Specifications

Details
SML 28 – 30
MED 32 – 34
XLG 40 – 42

Reviews From Real Customers

David T.
Eric M.
Beverley C.

9. Smartwool Women’s Classic Thermal Merino Base Layer Bottom – Blueberry Hill Heather

Smartwool Women's Classic Thermal Merino Base Layer Bottom - Blueberry Hill Heather

  • S

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Amazon
Backcountry.com
REI
Ramsey Outdoor

Product Details

Specifications

Details
Waist Measurement 27 in
Outseam 40 1 ⁄ 2 in
Inseam 30 in
Front Rise 9 1 ⁄ 2 in
Back Rise 14 in

Reviews From Real Customers

ChicagoWendy
ash22
Leslie C.

10. 100% Merino Wool Kancamagus Men’s Bottom – Midweight, Size: MT, Gray

100% Merino Wool Kancamagus Men's Bottom - Midweight, Size: MT, Gray

  • M

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Amazon
Minus33 Merino Wool Clothing

Product Details

Specifications

Details
UPF Rating 50+
Seasons Spring, Fall, Winter
High Activity Temperatures 0°F to 30°F

Reviews From Real Customers

Eric W.
Zack @.
Matt

11. Merino Full Length Base Layer | Black | BN3TH

Merino Full Length Base Layer | Black | BN3TH

  • XL

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Amazon
bn3th.com
The-House.com
Skis.com

Product Details

Specifications

Details
Primary Fabric Merino Wool
Rise Mid
Fabric Weight 5.90 oz / Square Yard
Fit Type Slim Fit

Reviews From Real Customers

Wilson Z.
Brent W.
Mark S.

12. Badlands OVIS Long Underwear Bottom-Stone-Large

Badlands OVIS Long Underwear Bottom-Stone-Large

  • L

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Amazon
OpticsPlanet.com
SportsRidge.com

Product Details

Specifications

Details
Weight 0.4 oz

Reviews From Real Customers

Doug S.
Lonnie F.
Brayden

13. Smartwool Classic Thermal Merino Base Layer Pattern Bottom – Women’s Black Dot, M

Smartwool Classic Thermal Merino Base Layer Pattern Bottom - Women's Black Dot, M

  • M

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Amazon
Backcountry.com
BackcountryGear.com
The-House.com

Product Details

Specifications

Details
Waist Measurement 26 in
Outseam 40 in
Inseam 31 in
Front Rise 9 in
Back Rise 13 in

Reviews From Real Customers

megk
katekate358

14. Smartwool Men’s Classic Thermal Merino Base Layer Pattern Bottoms, XXL, Picante Heather Shift

Smartwool Men's Classic Thermal Merino Base Layer Pattern Bottoms, XXL, Picante Heather Shift

  • 2XL

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Smartwool
Backcountry.com
DICK’S Sporting Goods
Field & Stream

Product Details

Specifications

Details
Insulation Weight heavy weight
Fit slim
Style long-john
Anti-Odor natural property of merino
Claimed Weight 8oz

Reviews From Real Customers

Justin K.
Ross O.
onehikeaweek

15. Rei Co-op Men’s Merino 185 Base Layer Bottoms Tall Sizes Black XXL Tall

Rei Co-op Men's Merino 185 Base Layer Bottoms Tall Sizes Black XXL Tall

  • 2XL

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Sold By Price
REI

Product Details

Specifications

Details
Sun-Protective Fabric Yes
UPF Rating 30
Moisture Wicking Yes
Quick Drying Yes
Fly Opening Yes

Reviews From Real Customers

Icicleadventurer
TonyM
Uncle Bob

16. BN3TH Merino Wool Full Length Base Layer : Spruce Green Camo

BN3TH Merino Wool Full Length Base Layer : Spruce Green Camo

  • L

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evo.com
bn3th.com

Product Details

Specifications

Details
Primary Fabric Merino Wool
Rise Mid
Fabric Weight 5.90 oz / Square Yard
Fit Type Slim Fit

Reviews From Real Customers

NATE B.
NoFretBrett S.
Borealis Mike

17. Mack Weldon Best WARMKNIT Long Underwear True Navy

Mack Weldon Best WARMKNIT Long Underwear True Navy

  • XL

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Mack Weldon

Product Details

Reviews From Real Customers

Simone D.
Paula G.
Robert B.

18. Women’s Merino Wool Long Underwear Bottoms – Black – Large – The Vermont Country Store

Women's Merino Wool Long Underwear Bottoms - Black - Large - The Vermont Country Store

  • L

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The Vermont Country Store

Product Details

Reviews From Real Customers

Fairy Gardens
Betty
Banna4

19. Devold W’s Breeze Long Johns – 100% Merino Wool

Devold W's Breeze Long Johns - 100% Merino Wool

  • M

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Weekendbee.com

Product Details

Specifications

Details
Fit Regular
Material characteristics breathable, elastic
Material outer fabric 100% Wool (Merino)
Outer fabric Merino Wool

Reviews From Real Customers

michael
Sebastian S
Rick W

20. Old Navy Women’s High-Waisted Ultrabase Merino Wool Base Layer Tights – – Size L

Old Navy Women's High-Waisted Ultrabase Merino Wool Base Layer Tights - - Size L

  • L

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Old Navy

Product Details

Specifications

Details
Regular inseam 27″.
Petite inseam 25″.
Tall inseam 31″.

Reviews From Real Customers

happy
Gwen in Boston

Conclusion

There are a few different types of wool long underwear on the market, but they all have one thing in common: they’re designed to keep you warm in cold weather. Wool is an excellent material for this purpose because it’s naturally insulating and breathable, meaning it will help regulate your body temperature no matter how cold it gets outside.

Wool long underwear comes in a variety of weights, so you can choose the level of warmth you need for any given activity. If you’re just looking for something to keep you warm around the house on a cold day, a lighter weight pair might be all you need.

But if you’re headed out for a day of skiing or snowboarding, you’ll want to choose a heavier weight pair that will stand up to the elements.

No matter what type of wool long underwear you choose, you can be sure it will be a valuable addition to your cold weather wardrobe.

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