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REI Co-op Long Sleeve Underwear

(30 products)
Products (30)
Remove brand filter:REI Co-opRemove sleeve-length filter:Long SleeveClear all
Sort: Best Match
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's
    $29.83
    Save 66%
    compared to  $89.95
    114 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMidweight Base Layer Half-Zip Top - Men's
    $19.83
    Save 66%
    compared to  $59.95
    202 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
    $29.83
    Save 66%
    compared to  $89.95
    149 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Sep 7
    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
    $33.69
    Save 25%
    compared to  $44.95
    49 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Sep 7
    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
    $33.69
    Save 25%
    compared to  $44.95
    48 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI Co-opMerino 185 Long-Sleeve Crew Base Layer Top - Women's
    $84.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
    $19.83
    Save 63%
    compared to  $54.95
    336 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Plus, Regular
    REI Co-opMidweight Base Layer Half-Zip Top - Women's
    $19.83
    Save 66%
    compared to  $59.95
    205 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    REI Co-opMerino 185 Long-Sleeve Crew Base Layer Top - Men's
    $84.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
    $29.83
    Save 62%
    compared to  $79.95
    249 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Sep 7
    Top Rated
    REI Co-opLightweight Half-Zip Base Layer Top - Women's
    $37.39
    Save 25%
    compared to  $49.95
    19 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $19.83
    Save 63%
    compared to  $54.95
    221 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMidweight Base Layer Crew Top - Kids'
    $34.95
    9 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI Co-opMidweight Half-Zip Base Layer Top - Women's
    $69.95
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
    $29.83
    Save 66%
    compared to  $89.95
    17 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall
    Top Rated
    REI Co-opMerino Midweight Base Layer Crew Top - Kids'
    $49.95
    32 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI Co-opMidweight Long-Sleeve Crew Base Layer Top - Women's
    $64.95
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Sep 7
    REI Co-opLightweight Half-Zip Base Layer Top - Men's
    $37.39
    Save 25%
    compared to  $49.95
    25 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Sep 7
    Top Rated
    REI Co-opLightweight Base Layer Crew Top - Kids'
    $22.39
    Save 25%
    compared to  $29.95
    13 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI Co-opMerino 250 Long-Sleeve Crew Base Layer Top - Men's
    $104.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    REI Co-opMerino 185 Half-Zip Base Layer Top - Women's
    $89.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI Co-opMidweight Long-Sleeve Crew Base Layer Top - Men's
    $64.95
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    New arrival
    REI Co-opMerino 250 Half-Zip Base Layer Top - Men's
    $109.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    REI Co-opMerino 185 Half-Zip Base Layer Top - Men's
    $89.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
  • Limited time only! The R E I Co-op Mastercard.

    $130 in value

    Get $30 in card rewards when approved by Sep 7. Plus, earn a $100 REI gift card after first qualifying purchase. Terms apply.

    Top Rated
    REI Co-opMidweight Base Layer Crew Top - Toddlers'
    $17.93
    Save 28%
    compared to  $24.95
    16 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Sep 7
    REI Co-opLightweight Crew Base Layer Top - Infants'/Toddlers'
    $14.89
    Save 25%
    compared to  $19.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI Co-opMerino 250 Long-Sleeve Crew Base Layer Top - Women's
    $104.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    REI Co-opMidweight Half-Zip Base Layer Top - Men's
    $69.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    New arrival
    REI Co-opMerino 250 Half-Zip Base Layer Top - Women's
    $109.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
    $29.83
    Save 62%
    compared to  $79.95
    233 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big
Sort: Best Match

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