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Wool Underwear

(329 products)
Products (329)
Sort: Best Match
  • 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

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

    $73.39
    Save 30%
    compared to  $104.95
    6 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Nov 25

    REI Co-opMerino Boxer Briefs - Men's

    $27.89
    Save 30%
    compared to  $39.95
    97 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
  • Sale Ends Nov 25

    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
    Top Rated

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

    $23.83 - $55.89
    Save 30% - 70%
    compared to  $79.95
    25 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
  • 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
  • Sale Ends Nov 25

    REI Co-opMerino Hipster Underwear - Women's

    $20.89
    Save 30%
    compared to  $29.95
    42 reviews with an average rating of 3.8 out of 5 stars
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    REI Co-opMerino Thong Underwear - Women's

    $17.39
    Save 30%
    compared to  $24.95
    28 reviews with an average rating of 4.1 out of 5 stars
    Size Type:
    Regular, Plus

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

    $34.83 - $48.89
    Save 30% - 50%
    compared to  $69.95
    15 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
  • Sale Ends Nov 25
    Top Rated

    SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's

    $86.19
    Save 25%
    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 Boxers - Men's

    $27.89
    Save 30%
    compared to  $39.95
    56 reviews with an average rating of 4.4 out of 5 stars
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opMerino Bikini Underwear - Women's

    $19.49
    Save 30%
    compared to  $27.95
    41 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25
    Top Rated

    SmartwoolClassic 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

    SmartwoolIntraknit Hipster Underwear - Women's

    $29.99
    Save 25%
    compared to  $40.00
    3 reviews with an average rating of 5.0 out of 5 stars
    Size Type:
    Regular
  • Sale Ends Nov 25
    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
    Top Rated

    REI Co-opMerino Bralette

    $31.39
    Save 30%
    compared to  $44.95
    144 reviews with an average rating of 4.6 out of 5 stars
    Bra Support:
    Low Impact
    Support Style:
    Encapsulation
    Fabric:
    48% merino wool/32% TENCEL lyocell/15% nylon/5% LYCRA spandex
  • Sale Ends Nov 25

    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

    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 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
    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 Nov 25

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

    $69.89
    Save 30%
    compared to  $99.95
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Nov 25
    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 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

    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 21

    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's

    $74.73
    Save 42%
    compared to  $130.00
    3 reviews with an average rating of 2.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends Nov 21

    Icebreaker200 ZoneKnit Merino Long-Sleeve Half-Zip Thermal Base Layer Top - Men's

    $69.73
    Save 56%
    compared to  $160.00
    0 reviews
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends Nov 21

    IcebreakerMerino 200 Oasis Long-Sleeve Half-Zip First Snow Thermal Base Layer Top - Men's

    $49.73
    Save 60%
    compared to  $125.00
    2 reviews with an average rating of 3.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends Nov 25

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

    $69.89
    Save 30%
    compared to  $99.95
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • 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
    93 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    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
1–30 of 329 products
Sort: Best Match

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