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Best Merino Wool Long Underwear

Updated December 2018
Why trust BestReviews?
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers.
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.
Bottom Line
Pros
Cons
Best of the Best
Coldpruf
Dual Layer Wool Legging
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Bottom Line

Insulated base layer is engineered to keep you warm even in severe weather conditions.

Pros

Two-layer garment made of 40% Merino wool. Comfort waistband. Tagless and front and back rise for comfort. Made by a brand dedicated to understanding the science of both weather and the appropriate clothing required for extreme environments.

Cons

May need to double layer in very cold conditions.

MERIWOOL
Men’s Merino Wool Midweight
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Bottom Line

Designed for adventure and to make sure your garments are warm and dry throughout the experience.

Pros

We love the details in terms of the blend of fabric as well as the design functionality. Fits snug yet comfortably. Made of 100% all natural superfine 18.5-micron Merino wool. Ensures comfort all day long, with no itch. Customers who snow-shoe, mountain climb, and ski appreciate this legging in extreme and physically demanding conditions.

Cons

May need to wash on a gentle wash cycle to preserve fabric integrity.

Best Bang for the Buck
Duofold
Double-Layer Thermal Pant
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Bottom Line

Affordably priced and built to maintain one's body temperature in cold, but not extreme conditions.

Pros

Made of 25% Merino wool. Tagless labels provide comfort. Reviewers note the softness of the fabric. Skin is exposed to the cotton inner layer, while the wool outer layer preserves warmth. Keeps customers continually warm time and time again.

Cons

The general cut may feel awkward.

WoolX
Women's Wool Leggings
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Bottom Line

Built tough for outdoor wear or a cozy day spent on the couch by the fire

Pros

Made of 100% Australian Merino wool. Moisture-wicking fabric eliminates odors. Reviewers claim the fabric feels soft enough to sleep in. Designed with some stretch to fit nicely beneath clothing. Accommodates several body types.

Cons

Overall fit may run long.

Hocosa of Switzerland
Women's Leggings in Wool-Silk Blend
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Bottom Line

Lightweight organic blend of fabric feels comfortable to wear in most conditions.

Pros

Features a 70/30 blend of certified organic merino wool and silk. The wool and silk fabric blend is thin to the touch but warms like thicker, bulkier products. Designed to wick away moisture. Can go weeks without washing, even with daily wear.

Cons

Fabric can feel itchy to some.

How we decided

We purchase every product we review with our own funds — we never accept anything from product manufacturers.

  • 19 Models Considered
  • 5 Hours Researched
  • 1 Experts Interviewed
  • 129 Consumers Consulted
    • Zero products received from manufacturers.

    We purchase every product we review with our own funds — we never accept anything from product manufacturers.

    Why trust BestReviews?
    BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.
    BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers.
    BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.

    Merino wool is known to keep you warm, and as a great ability to absorb and wick away moisture, keeping you warm and dry. Long underwear made of merino wool or wool blends stretches well for high-performance activities in outdoor climates. Certain blends won’t itch. Not all leggings are made of 100% merino wool fabric and it’s important to note the fabric blend depending on your expectation. As it's a natural fabric, your merino wool leggings may lose their shape if not washed properly. Ideal for those who are active in the snow, such as snowboarders and skiers, as the wool keeps you warm and dry.

    The team that worked on this review
    • Eliza
      Eliza
      Production Manager
    • Melinda
      Melinda
      Web Producer
    ×

    MERIWOOL

    Men’s Merino Wool Midweight

    MERIWOOL

    Men’s Merino Wool Midweight

    Designed for adventure and to make sure your garments are warm and dry throughout the experience.

    $0
    ×

    Duofold

    Double-Layer Thermal Pant

    Duofold

    Double-Layer Thermal Pant

    Affordably priced and built to maintain one's body temperature in cold, but not extreme conditions.

    $0
    ×

    Coldpruf

    Dual Layer Wool Legging

    Coldpruf

    Dual Layer Wool Legging

    Insulated base layer is engineered to keep you warm even in severe weather conditions.

    $0
    ×

    WoolX

    Women's Wool Leggings

    WoolX

    Women's Wool Leggings

    Built tough for outdoor wear or a cozy day spent on the couch by the fire
    $0
    ×

    Hocosa of Switzerland

    Women's Leggings in Wool-Silk Blend

    Hocosa of Switzerland

    Women's Leggings in Wool-Silk Blend

    Lightweight organic blend of fabric feels comfortable to wear in most conditions.

    $0

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