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Women's Midweight Base Layer Bottoms

(18 products)
Products (18)
Sort: Best Match
  • Sale Ends May 25
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
    $81.73
    Save 28%
    compared to  $115.00
    280 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 25
    REI Co-opMidweight Base Layer Tights - Women's
    $41.19
    Save 25%
    compared to  $54.95
    126 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus, Petite
  • Sale Ends May 25
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
    $93.69
    Save 25%
    compared to  $125.00
    769 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Top Rated
    IcebreakerMerino 200 Oasis Thermal Leggings - Women's
    $51.83 - $89.99
    Save 25% - 50%
    compared to  $105.00 - $120.00
    88 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends May 25
    Top Rated
    Icebreaker260 Tech High-Rise Base Layer Leggings - Women's
    $93.69
    Save 25%
    compared to  $125.00
    24 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Text reads: ‘Anniversary Sale 2026. 25% off’ over a collage of Smartwool long-sleeve shirts and colorful socks.

    Save 25% on all Smartwool clothing

    Arc'teryxRho Base Layer Bottoms - Women's
    $73.73
    Save 26%
    compared to  $100.00
    15 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Merino 3/4 Base Layer Bottoms - Women's
    $89.73
    Save 25%
    compared to  $120.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes
    $49.83 - $93.69
    Save 25% - 60%
    compared to  $125.00
    20 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Plus
  • Sale Ends May 25
    IcebreakerMerino 200 Oasis High-Rise Base Layer Leggings - Women's
    $97.49
    Save 25%
    compared to  $130.00
    7 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 25
    SmartwoolIntraknit AS Merino Base Layer Bottoms - Women's
    $93.69
    Save 25%
    compared to  $125.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaRose Light High-Waisted Base Layer Pants - Women's
    $76.73
    Save 30%
    compared to  $110.00
    3 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 25
    Kari TraaRose Light Capri Base Layer Pants - Women's
    $69.73
    Save 30%
    compared to  $100.00
    2 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 25
    Kari TraaAnna High-Waist Base Layer Pants - Women's
    $76.99
    Save 30%
    compared to  $110.00
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's
    $85.73
    Save 25%
    compared to  $115.00
    1 reviews with an average rating of 1.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 25
    Top Rated
    HalfdaysHallie Midweight Merino Base Layer Leggings - Women's
    $97.49
    Save 25%
    compared to  $130.00
    30 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    BurtonMidweight X Base Layer Pants - Women's
    $36.83
    Save 50%
    compared to  $74.95
    4 reviews with an average rating of 3.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    StioBasisPeak Wool Midweight Base Layer Tights - Women's
    $149.00
    Add to cart to see price
    5 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Wild RyeBassett Base Layer Leggings - Women's
    $39.83
    Save 65%
    compared to  $115.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Limited time only! The R E I Co-op Mastercard.

    Get $130 in value

    When approved for the REI Co-op Mastercard by May 25, you’ll get $30 in card rewards. Plus, you can earn a $100 REI gift card after your first non-REI purchase within 60 days from account opening. Terms apply.

Sort: Best Match