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Lightweight Base Layer Bottoms

(62 products)
Products (62)
Sort: Best Match
    tasc PerformanceElevation Merino Base Layer Bottoms - Women's
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    57 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    31 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    REI Co-opLightweight Base Layer Bottoms - Men's
    $39.95
    13 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
    Arc'teryxRho Base Layer Bottoms - Women's
    $24.83 - $100.00
    16 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI Co-opMerino 185 Base Layer Bottoms - Men's
    $79.95
    129 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opLightweight Base Layer Tights - Women's
    $39.95
    7 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI Co-opMerino 185 Base Layer Bottoms - Women's
    $79.95
    105 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
    $90.00
    16 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Kari TraaRose High-Waisted Base Layer Pants - Women's
    $54.83 - $130.00
    24 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
    $92.73
    Save 28%
    compared to  $130.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    27 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    Black DiamondSolution 150 Merino Base Layer Bottoms - Women's
    $79.73
    Save 27%
    compared to  $110.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    31 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    REI Co-opLightweight Base Layer Bottoms - Infants'/Toddlers'
    $19.95
    10 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's
    $90.00
    19 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opLightweight Base Layer Bottoms - Kids'
    $29.95
    10 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Free CountryForce Grid Fleece Base Layer Bottoms - Women's
    $34.73
    Save 36%
    compared to  $55.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    3 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    New arrival
    Kari TraaEloise Base Layer Pants - Women's
    $52.73
    Save 24%
    compared to  $70.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Kari TraaRose High-Waist Base Layer Pants - Women's
    $79.73
    Save 27%
    compared to  $110.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    24 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Kari TraaFryd Base Layer Pants - Women's
    $42.73
    Save 22% - 28%
    compared to  $55.00 - $60.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    15 reviews with an average rating of 3.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    New arrival
    Free CountryCloud Knit Base Layer Bottoms - Men's
    $26.73
    Save 33%
    compared to  $40.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
    $79.95
    13 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Men's
    $130.00
    23 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    New arrival
    Kari TraaSval Base Layer Pants - Women's
    $49.73
    Save 28%
    compared to  $70.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Arms of Andes160 Ultralight Alpaca Wool Base Layer Leggings - Men's
    $85.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Ultralightweight
    Size Type:
    Regular, Big
    Arc'teryxRho LT Base Layer Bottoms - Men's
    $100.00
    49 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Arc'teryxRho Merino Wool Base Layer Bottoms - Men's
    $120.00
    5 reviews with an average rating of 3.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
    $130.00
    27 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Kari TraaSmekker Base Layer Pants - Women's
    $83.73
    Save 30%
    compared to  $120.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    1 reviews with an average rating of 2.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes
    $79.95
    9 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
    CraftActive Intensity Base Layer Pants - Women's
    $31.73
    Save 42%
    compared to  $54.95
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    13 reviews with an average rating of 2.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    Helly HansenMerino Wool Base Layer Set - Kids'
    $75.73
    Save 36%
    compared to  $120.00
    Members use code OUTFALL25 for $20 off when you spend $100+ at REI Outlet.
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
1–30 of 62 products
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