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REI Co-op Long Sleeve Base Layers

(24 products)
Products (24)
Remove brand filter:REI Co-opRemove sleeve-length filter:Long SleeveClear all
Sort: Best Match
    REI Co-opMerino 185 Half-Zip Base Layer Top - Women's
    $89.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI Co-opMerino 185 Long-Sleeve Crew Base Layer Top - Women's
    $84.95
    1 reviews with an average rating of 3.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
    $44.95
    49 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
    $44.95
    51 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opLightweight Half-Zip Base Layer Top - Women's
    $49.95
    19 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
  • A collage of REI Co-op brand merino wool clothing on a light colored background. Ticker tape reads: ‘New design.’

    REI Co-op merino wool

    Made-for-layering styles that are naturally antimicrobial, pill resistant, moisture-wicking & quick-drying.

    REI Co-opMerino 185 Long-Sleeve Crew Base Layer Top - Men's
    $84.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
    REI Co-opLightweight Half-Zip Base Layer Top - Men's
    $49.95
    25 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI Co-opMidweight Long-Sleeve Crew Base Layer Top - Women's
    $64.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    REI Co-opMidweight Long-Sleeve Crew Base Layer Top - Men's
    $64.95
    2 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    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
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
    $19.83
    Save 63%
    compared to  $54.95
    338 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Plus
    Top Rated
    REI Co-opMidweight Base Layer Crew Top - Toddlers'
    $17.93 - $24.95
    16 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    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 - 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
    Top Rated
    REI Co-opLightweight Base Layer Crew Top - Kids'
    $29.95
    13 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    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-opLightweight Crew Base Layer Top - Infants'/Toddlers'
    $19.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI Co-opMidweight Half-Zip Base Layer Top - Men's
    $69.95
    2 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $19.83
    Save 63%
    compared to  $54.95
    223 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    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
    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 Long-Sleeve Base Layer Top - Women's
    $39.83
    Save 50%
    compared to  $79.95
    251 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    New arrival
    REI Co-opMerino 250 Half-Zip Base Layer Top - Women's
    $109.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • The R E I Co-op Mastercard. Earn 15% total R E I rewards.

    Earn 15% in Total REI Rewards

    Get 5% card rewards on all REI Co‑op purchases plus the 10% Co-op Member Reward you earn on eligible full-price purchases. Terms apply.

Sort: Best Match
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