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Merino Wool Base Layer Bottoms

(83 products)
Products (83)
Remove features filter:Merino Wool
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    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
    $81.73
    Save 28%
    compared to  $115.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    247 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    REI OUTLET
    REI Co-opMerino 185 Base Layer Bottoms - Men's
    $23.83 - $79.95
    128 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    tasc PerformanceElevation Merino Base Layer Bottoms - Women's
    $49.73
    Save 37%
    compared to  $79.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    53 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    SmartwoolIntraknit Active Base Layer Bottoms - Women's
    $79.93
    Save 27%
    compared to  $110.00
    6 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $49.73
    Save 37%
    compared to  $79.00
    Members use code OUT4JUL25 for $20 off $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
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
    $110.00 - $115.00
    736 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI Co-opMerino 185 Base Layer Bottoms - Women's
    $79.95
    104 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
    $29.83 - $69.93
    Save 30% - 70%
    compared to  $99.95
    18 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    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
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
    $115.00
    615 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's
    $90.00
    18 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    IcebreakerMerino 200 Oasis Thermal Base Layer Leggings - Women's
    $78.73
    Save 25%
    compared to  $105.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    68 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
    REI OUTLET
    Icebreaker200 Sonebula Leggings - Men's
    $89.73
    Save 25%
    compared to  $120.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    4 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
    $92.73
    Save 28%
    compared to  $130.00
    Members use code OUT4JUL25 for $20 off $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
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'
    $48.73
    Save 25%
    compared to  $65.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    52 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Wild RyeJane Leggings - Women's
    $64.73
    Save 40%
    compared to  $109.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    3 reviews with an average rating of 3.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
    $29.83 - $49.83
    Save 50% - 70%
    compared to  $99.95
    7 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Big, Tall
    SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
    $33.83
    Save 62%
    compared to  $90.00
    95 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
    SmartwoolIntraknit Thermal Max Merino Base Layer Bottoms - Women's
    $100.73
    Save 25%
    compared to  $135.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Active Base Layer Bottoms - Men's
    $81.73
    Save 25%
    compared to  $110.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    2 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Helly HansenMerino Wool Base Layer Set - Kids'
    $75.73
    Save 36%
    compared to  $120.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Active Base Layer Bottoms - Women's
    $76.73
    Save 30%
    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
    REI OUTLET
    Top Rated
    IcebreakerMerino 260 Tech Thermal Base Layer Leggings - Kids'
    $49.73
    Save 28%
    compared to  $70.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    7 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    REI Co-opMerino Midweight Base Layer Bottoms - Kids'
    $49.95
    15 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    Kari TraaLucie Base Layer Pants - Women's
    $59.73
    Save 25%
    compared to  $80.00
    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
    Helly HansenLifa Merino Midweight Base Layer Set - Kids'
    $69.73
    Save 30%
    compared to  $100.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    2 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men's
    $105.00
    53 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    IcebreakerMerino 260 Tech Thermal Base Layer Leggings - Women's
    $93.73
    Save 25%
    compared to  $125.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    21 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    REI OUTLET
    Top Rated
    Icebreaker260 Merino Tech Thermal Leggings with Fly - Men's
    $125.00
    52 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    Kari TraaMalia Base Layer Pants - Women's
    $52.73
    Save 24%
    compared to  $70.00
    Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
1–30 of 83 products
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