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REI Co-op Merino Wool Underwear

(30 products)
Products (30)
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  • 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 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 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 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 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
    Top Rated

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

    $34.89
    Save 30%
    compared to  $49.95
    21 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    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-opMerino 185 Base Layer Bottoms - Men's

    $55.89
    Save 30%
    compared to  $79.95
    102 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 Base Layer Bottoms - Women's

    $55.89
    Save 30%
    compared to  $79.95
    94 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 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-opHeavyweight Merino Base Layer Half-Zip Top - Women's

    $73.39
    Save 30%
    compared to  $104.95
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    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 - 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
    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 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-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 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 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
  • Sale Ends Nov 25
    Top Rated

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

    $55.89
    Save 30%
    compared to  $79.95
    8 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends Nov 25

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

    $55.89
    Save 30%
    compared to  $79.95
    13 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends Nov 25
    Top Rated

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

    $62.89
    Save 30%
    compared to  $89.95
    12 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends Nov 25

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

    $55.89
    Save 30%
    compared to  $79.95
    7 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
  • Sale Ends Nov 25

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

    $62.89
    Save 30%
    compared to  $89.95
    15 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 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
  • Sale Ends Nov 25

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

    $48.89
    Save 30%
    compared to  $69.95
    48 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    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

    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

    REI Co-opMerino Bralette

    $31.39
    Save 30%
    compared to  $44.95
    142 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

    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
Sort: Best Match

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