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Base Layer Bottoms: Deals

(91 products)
Products (91)
Sort: Best Match
    REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
    $69.93 - $99.95
    33 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    Top Rated
    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
    $69.93 - $99.95
    18 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    42 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    Arc'teryxRho Base Layer Bottoms - Women's
    $24.83 - $100.00
    37 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Icebreaker260 Tech High-Rise Base Layer Leggings - Women's
    $89.93 - $125.00
    23 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    tasc PerformanceElevation Merino Base Layer Bottoms - Women's
    $54.73
    Save 30%
    compared to  $79.00
    66 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    Top Rated
    Kari TraaRose High-Waisted Base Layer Pants - Women's
    $90.93 - $120.00
    14 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    Arc'teryxRho Insulated 3/4 Base Layer Bottoms - Men's
    $159.73
    Save 20%
    compared to  $200.00
    13 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Big, Regular
    REI OUTLET
    Kari TraaKlara High-Waisted Base Layer Pants - Women's
    $62.73 - $66.73
    Save 25% - 30%
    compared to  $90.00
    14 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    PatagoniaCapilene Midweight Base Layer Bottoms - Women's
    $61.93 - $89.00
    28 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Plus
    HalfdaysSophia Base Layer Leggings - Women's
    $65.93 - $95.00
    123 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Kari TraaSilja 2.0 Base Layer Pants - Women's
    $76.93
    Save 30%
    compared to  $110.00
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Kari TraaAnna High-Waist Base Layer Pants - Women's
    $76.93 - $110.00
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Arc'teryxRho Base Layer Bottoms - Women's
    $79.73
    Save 20%
    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
    Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's
    $79.73
    Save 27%
    compared to  $110.00
    1 reviews with an average rating of 1.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    SENIQWool Sculpt Merino Base Layer Leggings - Women's
    $99.93 - $128.00
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Top Rated
    Icebreaker200 Sonebula Leggings - Men's
    $89.73
    Save 25%
    compared to  $120.00
    5 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    REI Co-opMerino Midweight Base Layer Bottoms - Kids'
    $36.93
    Save 26%
    compared to  $49.95
    16 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    New arrival
    PatagoniaCapilene Midweight Base Layer Bottoms - Kids'
    $28.73
    Save 26%
    compared to  $39.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    KUHLReactiv Lite Grid Base Layer Bottoms - Women's
    $73.93
    Save 25%
    compared to  $99.00
    3 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Limited-time offer! The REI Co-op Mastercard.

    Get $130 in value

    $30 in card rewards are yours when approved for the REI Co-op Mastercard by Mar 9. Plus, you can earn a $100 REI gift card after your first purchase. Terms apply.

    Free CountryCloud Knit Base Layer Bottoms - Men's
    $26.73
    Save 33%
    compared to  $40.00
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
    $92.73
    Save 28%
    compared to  $130.00
    29 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    IcebreakerMerino 200 Oasis High-Rise Base Layer Leggings - Women's
    $79.93 - $130.00
    6 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    New arrival
    Mountain HardwearUp First Tech Fleece Base Layer Bottoms - Men's
    $74.73
    Save 25%
    compared to  $100.00
    3 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Free CountryForce Grid Fleece Base Layer Bottoms - Women's
    $34.73
    Save 36%
    compared to  $55.00
    11 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's
    $49.83 - $99.00
    16 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes
    $49.93
    Save 37%
    compared to  $79.95
    11 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
    Top Rated
    HalfdaysHallie Midweight Merino Base Layer Leggings - Women's
    $89.93 - $130.00
    30 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Arc'teryxRho Hybrid Insulated Base Layer Bottoms - Women's
    $145.73
    Save 19%
    compared to  $180.00
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI OUTLET
    Kari TraaSaga Base Layer Pants - Women's
    $83.93
    Save 30%
    compared to  $120.00
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
Sort: Best Match

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