Skip to search results
loaded 63 results

Women's Base Layer Tops: Deals

(63 products)
Products (63)
Sort: Best Match
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
    $79.97 - $86.97
    Save 30%
    compared to  $115.00 - $125.00
    REI Outlet
    Top Rated
    1558 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
    $89.93 - $130.00
    Top Rated
    1090 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    SmartwoolClassic All-Season Merino Base Layer Long-Sleeve Shirt - Women's
    $69.97
    Save 30%
    compared to  $100.00
    REI Outlet
    Top Rated
    434 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    tasc PerformanceElevation Merino T-Shirt - Women's
    $54.73
    Save 30%
    compared to  $79.00
    REI Outlet
    98 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Women's
    $89.97
    Save 30%
    compared to  $130.00
    REI Outlet
    Top Rated
    1100 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaRose Half-Zip Base Layer Top - Women's
    $99.73
    Save 28%
    compared to  $140.00
    REI Outlet
    Top Rated
    52 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
    $96.73
    Save 25%
    compared to  $130.00
    REI Outlet
    239 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaFryd Long-Sleeve Base Layer Top - Women's
    $44.97
    Save 30%
    compared to  $65.00
    REI Outlet
    29 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Kari TraaSilja 2.0 Half-Zip Base Layer Top - Women's
    $89.73
    Save 30%
    compared to  $130.00
    REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Kari TraaTale Long-Sleeve Base Layer Top - Women's
    $79.73
    Save 27%
    compared to  $110.00
    REI Outlet
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    IcebreakerMerino 175 Everyday Long Sleeve Half-Zip Thermal Base Layer Top - Women's
    $74.97
    Save 28%
    compared to  $105.00
    REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Free CountryMicrotech Heat Cocarber Base Layer Top - Women's - Package of 2
    $42.73
    Save 18%
    compared to  $52.50
    REI Outlet
    Top Rated
    12 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Black DiamondSolution 150 Merino Base Layer Crew Top - Women's
    $66.67
    Save 50%
    compared to  $135.00
    REI Outlet
    Top Rated
    23 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    SmartwoolClassic Thermal Merino Half-Zip Base Layer Hoodie - Women's
    $108.73
    Save 25%
    compared to  $145.00
    REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Helly HansenLIFA ACTIVE Stripe Crew Base Layer Top - Women's
    $48.73
    Save 25%
    compared to  $65.00
    REI Outlet
    1 reviews with an average rating of 1.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Helly HansenLIFA Merino Midweight Graphic Crew Base Layer - Women's
    $85.73
    Save 25%
    compared to  $115.00
    REI Outlet
    4 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • A yellow Member Bonus Card and two holiday-themed gift cards on a light colored background.

    Give the gift of the outdoors

    Members, get a $25 bonus e-card when you buy a $130+ gift card. Terms apply.

    Shop gift cards
    SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Women's
    $107.87
    Save 30%
    compared to  $155.00
    REI Outlet
    30 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Kari TraaMalia Long-Sleeve Base Layer Top - Women's
    $68.73
    Save 23%
    compared to  $90.00
    REI Outlet
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Plus, Regular
    Kari TraaAnna Long-Sleeve Base Layer Top - Women's
    $79.73
    Save 27%
    compared to  $110.00
    REI Outlet
    3 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaSaga Hooded Base Layer Top - Women's
    $109.73
    Save 24%
    compared to  $145.00
    REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
    $84.73
    Save 26%
    compared to  $115.00
    REI Outlet
    Top Rated
    18 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaFaith Half-Zip Base Layer Top - Women's
    $106.73
    Save 28%
    compared to  $150.00
    REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Kari TraaTale Half-Zip Base Layer Top - Women's
    $89.73
    Save 25%
    compared to  $120.00
    REI Outlet
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaRose Base Layer Hoodie - Women's
    $109.73
    Save 26%
    compared to  $150.00
    REI Outlet
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Arc'teryxSatoro Merino Wool Crew Neck Long-Sleeve Base Layer Top - Women's
    $95.73
    Save 20%
    compared to  $120.00
    REI Outlet
    Top Rated
    21 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Helly HansenLIFA Merino Midweight Crew Base Layer Top - Women's
    $78.73
    Save 25%
    compared to  $105.00
    REI Outlet
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Plus, Regular
    Kari TraaMalia Half-Zip Base Layer Top - Women's
    $76.73
    Save 23%
    compared to  $100.00
    REI Outlet
    1 reviews with an average rating of 3.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    SmartwoolClassic Thermal Merino Mock Neck Base Layer Top - Women's
    $104.73
    Save 25%
    compared to  $140.00
    REI Outlet
    Top Rated
    11 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    SwixRaceX Classic Long-Sleeve Base Layer Top - Women's
    $39.73
    Save 33%
    compared to  $60.00
    REI Outlet
    New arrival
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Kari TraaAnna Half-Zip Base Layer Top - Women's
    $89.73
    Save 25%
    compared to  $120.00
    REI Outlet
    1 reviews with an average rating of 3.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
Sort: Best Match

Related Expert Advice articles

Illustration of a hand holding a phone.

Checkout faster

Track your order, shop and save— all in one place

Get the REI app