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REI Co-op Underwear

(53 products)
Products (53)
Remove brand filter:REI Co-op
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  • Sale Ends May 26
    REI Co-opMerino 185 Base Layer Top - Women's Plus Sizes
    $48.89
    Save 30%
    compared to  $69.95
    20 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
  • Sale Ends May 26
    Top Rated
    REI Co-opMidweight Base Layer Crew Top - Kids'
    $24.39
    Save 30%
    compared to  $34.95
    5 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 26
    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 May 26
    Top Rated
    REI Co-opMerino Midweight Base Layer Bottoms - Kids'
    $34.89
    Save 30%
    compared to  $49.95
    15 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opMerino Midweight Base Layer Crew Top - Kids'
    $34.89
    Save 30%
    compared to  $49.95
    25 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 26
    New arrival
    REI Co-opActive Pursuits Crop Tank Top - Women's
    $31.39
    Save 30%
    compared to  $44.95
    0 reviews
    Bra Support:
    Low Impact
    Support Style:
    Compression
    Fabric:
    86% recycled polyester/14% spandex (bluesign approved)
  • Sale Ends May 26
    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
  • Sale Ends May 26
    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
    13 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall
  • Sale Ends May 26
    Top Rated
    REI Co-opActive Thong Underwear - Women's
    $10.39
    Save 30%
    compared to  $14.95
    16 reviews with an average rating of 4.5 out of 5 stars
    Size Type:
    Plus
  • Sale Ends May 26
    REI Co-opMerino Thong Underwear - Women's
    $17.39
    Save 30%
    compared to  $24.95
    32 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Plus, Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opLightweight Crew Base Layer Top - Infants'/Toddlers'
    $13.89
    Save 30%
    compared to  $19.95
    10 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMidweight Crew Base Layer Top - Toddlers'
    $17.39 - $24.95
    14 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 26
    REI Co-opMerino 185 Base Layer Top - Men's
    $48.89
    Save 30%
    compared to  $69.95
    51 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends May 26
    REI Co-opMerino Boxers - Men's
    $27.89
    Save 30%
    compared to  $39.95
    65 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
  • Sale Ends May 26
    REI Co-opEveryday Briefs - Men's
    $13.89
    Save 30%
    compared to  $19.95
    93 reviews with an average rating of 3.5 out of 5 stars
    Size Type:
    Regular
  • Sale Ends May 26
    REI Co-opActive Bralette 2.0
    $24.39
    Save 30%
    compared to  $34.95
    110 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
    Top Rated
    REI Co-opMidweight Base Layer Bottoms - Toddlers'
    $17.39 - $24.95
    7 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opLightweight Base Layer Bottoms - Kids'
    $20.89
    Save 30%
    compared to  $29.95
    9 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opLightweight Base Layer Crew Top - Kids'
    $20.89
    Save 30%
    compared to  $29.95
    12 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opLightweight Base Layer Bottoms - Infants'/Toddlers'
    $13.89
    Save 30%
    compared to  $19.95
    8 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
    $49.83
    Save 50%
    compared to  $99.95
    7 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Big, Tall
    Top Rated
    REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
    $49.83 - $69.93
    Save 30% - 50%
    compared to  $99.95
    18 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Plus
    REI Co-opLightweight Base Layer Tights - Women's Plus Sizes
    $9.83
    Save 75%
    compared to  $39.95
    12 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
31–53 of 53 products
Sort: Best Match

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