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Base Layer Tops: Deals

(139 products)
Products (139)
Sort: Best Match
    HalfdaysJohnson Base Layer Top - Women's
    $49.83
    Save 41%
    compared to  $85.00
    104 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Ultralightweight
    Size Type:
    Plus
    SpraywayEffra Crew Base Layer Top - Women's
    $36.73
    Save 26%
    compared to  $49.95
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    REI OUTLET
    SmartwoolIntraknit Thermal Max Merino Base Layer Pattern Hoodie - Women's
    $123.73
    Save 25%
    compared to  $165.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    Free CountryMicrotech Heat Cocaber Base Layer Top - Women's
    $34.73
    Save 30%
    compared to  $50.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
    $92.73
    Save 28%
    compared to  $130.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    9 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Terramar3.0 Thermawool Half-Zip Base Layer Top - Women's
    $56.73
    Save 24%
    compared to  $75.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolClassic Thermal Merino Base Layer Hoodie - Kids'
    $51.73
    Save 31%
    compared to  $75.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    3 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's
    $59.83
    Save 53%
    compared to  $130.00
    82 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaLilja Long-Sleeve Base Layer Top - Women's
    $49.73
    Save 24%
    compared to  $66.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI OUTLET
    SpraywayEffra Jacket Base Layer Top - Women's
    $46.73
    Save 28%
    compared to  $64.95
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    REI OUTLET
    SmartwoolIntraknit Active Base Layer Crew Shirt - Women's
    $76.73
    Save 30%
    compared to  $110.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Picture Organic ClothingNangha Base Layer Top - Men's
    $44.83
    Save 50%
    compared to  $90.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    Helly HansenLifa Merino Midweight Graphic Base Layer Top - Women's
    $79.73 - $82.73
    Save 24% - 27%
    compared to  $110.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    5 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Kari TraaRose Base Layer Hoodie - Women's
    $97.73
    Save 24%
    compared to  $130.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI OUTLET
    Free CountryMicrotech Heat Cocaber Base Layer Top - Men's
    $21.73
    Save 45%
    compared to  $40.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Base Layer Colorblock Crew - Men's
    $96.73
    Save 25%
    compared to  $130.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    11 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Kari TraaFloke Long-Sleeve Base Layer Top - Women's
    $74.73
    Save 25%
    compared to  $100.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Ortovox185 Merino Rock'n'wool Base Layer Top - Women's
    $49.83
    Save 50%
    compared to  $100.00
    2 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Terramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's
    $52.73
    Save 29%
    compared to  $75.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SeirusHeatwave All Season Reversible Long-Sleeve Base Layer Top - Women's
    $36.83
    Save 50%
    compared to  $75.00
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    SmartwoolIntraknit Active Base Layer Crew Shirt - Men's
    $81.73
    Save 25%
    compared to  $110.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    ArtilectBoulder 125 Crew Long-Sleeve Base Layer Top - Women's
    $75.73
    Save 36%
    compared to  $120.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 1.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Terramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's
    $29.73
    Save 33%
    compared to  $45.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Men's
    $75.73
    Save 41%
    compared to  $130.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    2 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big
    REI OUTLET
    Kari TraaRose Light Half-Zip Base Layer Top - Women's
    $89.73
    Save 25%
    compared to  $120.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's
    $112.73
    Save 19%
    compared to  $140.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Big
    REI OUTLET
    Top Rated
    ArtilectDarkhorse 185 Zoned Crew Base Layer Top - Men's
    $109.73
    Save 31%
    compared to  $160.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    7 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    SpraywayEffra Hoody Base Layer Top - Women's
    $49.73
    Save 28%
    compared to  $69.95
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    REI OUTLET
    Free CountryForce Grid Fleece Base Layer Top - Men's
    $29.73
    Save 33%
    compared to  $45.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    4 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big
    REI OUTLET
    Top Rated
    CotopaxiLiso Base Layer Top - Men's
    $44.73
    Save 31%
    compared to  $65.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    37 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Big
    REI OUTLET
Sort: Best Match

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