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Smartwool Long Sleeve Base Layers

(42 products)
Products (42)
Remove brand filter:SmartwoolRemove sleeve-length filter:Long SleeveClear all
Sort: Best Match
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's
    $53.83 - $100.00
    98 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $53.83 - $100.00
    104 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
    $68.83 - $125.00
    1218 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    Top Rated
    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
    $71.83 - $130.00
    69 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
    $77.83 - $150.00
    199 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Top Rated
    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
    $71.83 - $130.00
    57 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $68.83 - $125.00
    1538 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's
    $69.73
    Save 26%
    compared to  $95.00
    6 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'
    $48.73
    Save 18% - 25%
    compared to  $60.00 - $65.00
    6 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
    $81.73 - $84.73
    Save 26% - 28%
    compared to  $115.00
    436 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's
    $83.83 - $140.00
    7 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Top Rated
    SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men's
    $66.73
    Save 25%
    compared to  $90.00
    104 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
    $77.83 - $150.00
    208 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's
    $105.00
    6 reviews with an average rating of 4.5 out of 5 stars
    Size Type:
    Regular
    SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Women's
    $77.83
    Save 40%
    compared to  $130.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    SmartwoolClassic Thermal Merino Base Layer Hoodie - Men's
    $108.73
    Save 25%
    compared to  $145.00
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Men's
    $99.93 - $155.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Men's
    $89.73
    Save 25%
    compared to  $120.00
    57 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
    $96.73
    Save 25%
    compared to  $130.00
    130 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's
    $105.00
    10 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
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    Terms apply
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $84.73
    Save 26%
    compared to  $115.00
    317 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Women's
    $89.73
    Save 25%
    compared to  $120.00
    69 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    New arrival
    SmartwoolIntraknit Thermal Merino Base Layer Hoodie - Men's
    $134.73
    Save 25%
    compared to  $180.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    New arrival
    SmartwoolClassic Thermal Merino Half-Zip Base Layer Hoodie - Women's
    $108.73
    Save 25%
    compared to  $145.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
    $83.83 - $140.00
    20 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Men's
    $96.73
    Save 25%
    compared to  $130.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Kids'
    $49.73
    Save 28%
    compared to  $70.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'
    $31.83 - $65.00
    6 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    SmartwoolIntraknit Thermal Merino Colorblock Crew Base Layer Top - Men's
    $77.83 - $130.00
    12 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolClassic Thermal Merino Mock Neck Base Layer Top - Women's
    $104.73
    Save 25%
    compared to  $140.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
1–30 of 42 products
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