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REI Co-op Women's Underwear

(32 products)
Products (32)
Remove brand filter:REI Co-op
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  • Sale Ends Nov 25

    REI Co-opMidweight Base Layer Half-Zip Top - Women's

    $41.89
    Save 30%
    compared to  $59.95
    112 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • 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 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-opActive Hipster Underwear - Women's

    $13.19
    Save 30%
    compared to  $18.95
    35 reviews with an average rating of 3.8 out of 5 stars
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    REI Co-opActive Thong Underwear - Women's

    $10.39
    Save 30%
    compared to  $14.95
    10 reviews with an average rating of 4.2 out of 5 stars
    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-opActive Bralette 2.0

    $24.39
    Save 30%
    compared to  $34.95
    101 reviews with an average rating of 4.2 out of 5 stars
    Bra Support:
    Low Impact
    Support Style:
    Encapsulation
    Fabric:
    86% polyester/14% spandex mesh
  • 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

    REI Co-opMidweight Long-Sleeve Base Layer Top - Women's

    $26.83 - $38.39
    Save 30% - 51%
    compared to  $54.95
    204 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    REI Co-opMidweight Base Layer Tights - Women's

    $38.39
    Save 30%
    compared to  $54.95
    75 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus, Petite
  • 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

    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
    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 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 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
    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
    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
    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
    42 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular
  • 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-opActive Bikini Underwear - Women's

    $13.89
    Save 30%
    compared to  $19.95
    49 reviews with an average rating of 3.3 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

    REI Co-opActive Briefs - Women's

    $12.49
    Save 30%
    compared to  $17.95
    34 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular

    REI Co-opLightweight Base Layer Tights - Women's

    $27.93
    Save 30%
    compared to  $39.95
    57 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular

    REI Co-opLightweight Base Layer Tights - Women's Plus Sizes

    $27.93
    Save 30%
    compared to  $39.95
    11 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
    Top Rated

    REI Co-opLightweight Base Layer Half-Zip Top - Women's

    $29.93
    Save 33%
    compared to  $44.95
    79 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular

    REI Co-opActive Pursuits Sports Bra

    $14.83
    Save 70%
    compared to  $49.95
    57 reviews with an average rating of 3.8 out of 5 stars
    Bra Support:
    Medium Impact
    Support Style:
    Compression / Encapsulation
    Fabric:
    86% recycled polyester/14% spandex (bluesign approved)

    REI Co-opLightweight Base Layer Crew Top - Women's Plus Sizes

    $19.93
    Save 33%
    compared to  $29.95
    9 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus

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

    $27.93
    Save 30%
    compared to  $39.95
    175 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
1–30 of 32 products
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