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Wool Base Layers

(290 products)
Products (290)
Remove fabric-type filter:Wool / Wool Blend
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  • Sale Ends Dec 2

    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's

    $86.19
    Save 25%
    compared to  $115.00
    701 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Bottoms - Men's

    $55.89
    Save 30%
    compared to  $79.95
    103 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated

    SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's

    $56.83 - $86.19
    Save 25% - 50%
    compared to  $115.00
    1097 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's

    $55.89
    Save 30%
    compared to  $79.95
    174 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's

    $69.89
    Save 30%
    compared to  $99.95
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Dec 2
    Top Rated

    Classic Thermal Merino Crew Base Layer Top - Men's

    $86.19
    Save 25%
    compared to  $115.00
    1449 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Bottoms - Women's

    $55.89
    Save 30%
    compared to  $79.95
    93 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Nov 25
    Top Rated

    REI Co-opHeavyweight Merino Base Layer Bottoms - Women's

    $69.89
    Save 30%
    compared to  $99.95
    5 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • Sale Ends Dec 2
    Top Rated

    SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's

    $86.19
    Save 25%
    compared to  $115.00
    572 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's

    $69.89
    Save 30%
    compared to  $99.95
    3 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Nov 25
    Top Rated

    REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Women's

    $73.39
    Save 30%
    compared to  $104.95
    6 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25
    Top Rated

    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's

    $55.89
    Save 30%
    compared to  $79.95
    149 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated

    IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's

    $62.83 - $78.69
    Save 25% - 40%
    compared to  $105.00
    65 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25
    Top Rated

    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Women's

    $69.89
    Save 30%
    compared to  $99.95
    5 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • Sale Ends Dec 2

    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's

    $89.99
    Save 25%
    compared to  $120.00
    3 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25
    Top Rated

    IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's

    $78.69
    Save 25%
    compared to  $105.00
    61 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25
    Top Rated

    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's

    $62.89
    Save 30%
    compared to  $89.95
    92 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25
    Top Rated

    REI Co-opMerino Midweight Base Layer Crew Top - Kids'

    $34.89
    Save 30%
    compared to  $49.95
    21 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Dec 2

    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's

    $67.49
    Save 25%
    compared to  $90.00
    36 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Dec 2
    Top Rated

    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's

    $89.99
    Save 25%
    compared to  $120.00
    5 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Dec 2

    SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's

    $67.49
    Save 25%
    compared to  $90.00
    9 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Dec 2

    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's

    $97.49
    Save 25%
    compared to  $130.00
    13 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opMerino Midweight Base Layer Bottoms - Kids'

    $34.89
    Save 30%
    compared to  $49.95
    13 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's

    $73.39
    Save 30%
    compared to  $104.95
    4 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Nov 25
    Top Rated

    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's

    $62.89
    Save 30%
    compared to  $89.95
    88 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Top - Women's

    $48.89
    Save 30%
    compared to  $69.95
    30 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Dec 2

    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's

    $97.49
    Save 25%
    compared to  $130.00
    183 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'

    $48.69
    Save 25%
    compared to  $65.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Dec 2
    Top Rated

    SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's

    $67.49
    Save 25%
    compared to  $90.00
    8 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    Icebreaker260 Merino Tech Thermal Leggings with Fly - Men's

    $93.69
    Save 25%
    compared to  $125.00
    19 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
1–30 of 290 products
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