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REI Co-op Men's Underwear

(22 products)
Products (22)
Sort: Best Match
    Colors
    Top Rated

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

    $55.89 - $55.93
    Save 30%
    compared to  $79.95
    139 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Colors

    REI Co-opMerino Boxers - Men's

    $27.89 - $39.95
    46 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Big
  • Sale Ends May 27
    Colors

    REI Co-opLightweight Base Layer Bottoms - Men's

    $27.89
    Save 30%
    compared to  $39.95
    70 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 27
    Colors
    Top Rated

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

    $38.39
    Save 30%
    compared to  $54.95
    112 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    Colors

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

    $55.89 - $55.93
    Save 30%
    compared to  $79.95
    95 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 27
    Colors
    Top Rated

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

    $27.89
    Save 30%
    compared to  $39.95
    176 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Colors

    REI Co-opMidweight Base Layer Bottoms - Men's

    $26.83 - $38.39
    Save 30% - 51%
    compared to  $54.95
    62 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends May 27
    Colors

    REI Co-opLightweight Base Layer Crew Top - Men's

    $20.89
    Save 30%
    compared to  $29.95
    92 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends May 27
    Colors

    REI Co-opEveryday Boxer Briefs - Men's

    $15.99
    Save 30%
    compared to  $22.95
    138 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Big
  • Sale Ends May 27

    REI Co-opMerino Boxer Briefs - Men's

    $27.89
    Save 30%
    compared to  $39.95
    82 reviews with an average rating of 4.4 out of 5 stars
    Size Type:
    Regular
  • Sale Ends May 27

    REI Co-opEveryday Boxers - Men's

    $15.99
    Save 30%
    compared to  $22.95
    108 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular
  • Sale Ends May 27
    Colors
    Top Rated

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

    $31.39
    Save 30%
    compared to  $44.95
    102 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 27

    REI Co-opLightweight Base Layer Bottoms - Men's Tall Sizes

    $27.89
    Save 30%
    compared to  $39.95
    13 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends May 27
    Colors
    Top Rated

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

    $41.89
    Save 30%
    compared to  $59.95
    99 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    Colors
    Top Rated

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

    $62.89 - $62.93
    Save 30%
    compared to  $89.95
    84 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 27

    REI Co-opEveryday Briefs - Men's

    $13.89
    Save 30%
    compared to  $19.95
    89 reviews with an average rating of 3.6 out of 5 stars
    Size Type:
    Regular
  • Sale Ends May 27
    Colors

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

    $48.89
    Save 30%
    compared to  $69.95
    41 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 27

    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 27

    REI Co-opLightweight Base Layer Long-Sleeve Zip-Neck Top - Men's Tall Sizes

    $31.39
    Save 30%
    compared to  $44.95
    13 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends May 27
    Colors

    REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's Tall Sizes

    $27.89
    Save 30%
    compared to  $39.95
    12 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends May 27
    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 27
    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
Sort: Best Match

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