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Sun-Protective Fabric Base Layer Bottoms

(32 products)
Products (32)
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    REI Co-opLightweight Base Layer Bottoms - Men's

    $27.93
    Save 30%
    compared to  $39.95
    77 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    REI Co-opMidweight Base Layer Bottoms - Men's

    $38.39
    Save 30%
    compared to  $54.95
    67 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall

    REI Co-opMidweight Base Layer Tights - Women's

    $26.83 - $38.39
    Save 30% - 51%
    compared to  $54.95
    75 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus, Petite
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Bottoms - Men's

    $55.89
    Save 30%
    compared to  $79.95
    103 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's

    $69.89
    Save 30%
    compared to  $99.95
    3 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Nov 25
    Top Rated

    REI Co-opHeavyweight Merino Base Layer Bottoms - Women's

    $69.89
    Save 30%
    compared to  $99.95
    5 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes

    $55.89
    Save 30%
    compared to  $79.95
    13 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
  • Sale Ends Nov 25

    Icebreaker200 Oasis 3/4 Base Layer Bottoms - Men's

    $71.19
    Save 25%
    compared to  $95.00
    3 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25

    REI Co-opMerino Midweight Base Layer Bottoms - Kids'

    $34.89
    Save 30%
    compared to  $49.95
    13 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Bottoms - Women's

    $55.89
    Save 30%
    compared to  $79.95
    93 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular

    Icebreaker200 Sonebula Leggings - Men's

    $89.73
    Save 25%
    compared to  $120.00
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends Nov 25

    REI Co-opMidweight Base Layer Bottoms - Kids'

    $24.39
    Save 30%
    compared to  $34.95
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    Icebreaker260 Merino Tech Thermal Leggings with Fly - Men's

    $93.69
    Save 25%
    compared to  $125.00
    19 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25
    Top Rated

    REI Co-opMidweight Base Layer Bottoms - Toddlers'

    $17.39
    Save 30%
    compared to  $24.95
    7 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Nov 25
    Top Rated

    IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men's

    $78.69
    Save 25%
    compared to  $105.00
    26 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Nov 25
    Top Rated

    REI Co-opLightweight Base Layer Bottoms - Kids'

    $20.89
    Save 30%
    compared to  $29.95
    9 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Nov 25
    Top Rated

    REI Co-opLightweight Base Layer Bottoms - Infants'/Toddlers'

    $13.89
    Save 30%
    compared to  $19.95
    6 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    IcebreakerMerino 200 Oasis Thermal Leggings - Women's

    $78.69
    Save 25%
    compared to  $105.00
    38 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Nov 25

    REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes

    $55.89
    Save 30%
    compared to  $79.95
    7 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Plus
  • Sale Ends Nov 25

    IcebreakerMerino 200 Sonebula Thermal Base Layer Leggings - Women's

    $89.99
    Save 25%
    compared to  $120.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Nov 25

    Icebreaker200 Oasis Base Layer Shorts - Men's

    $56.19
    Save 25%
    compared to  $75.00
    1 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big

    REI Co-opLightweight Base Layer Tights - Women's

    $27.93
    Save 30%
    compared to  $39.95
    57 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular

    BurtonLightweight Base Layer Set - Kids'

    $59.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular

    BurtonLightweight Base Layer Set - Toddlers'

    $54.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular

    BurtonHeavyweight X Base Layer Pants - Women's

    $99.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus

    Icebreaker200 Oasis Sonebula Base Layer Leggings - Women's

    $89.73
    Save 25%
    compared to  $120.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET

    Terramar3.0 Thermawool Heavyweight Thermal Pants - Men's

    $49.73
    Save 28%
    compared to  $70.00
    2 reviews with an average rating of 3.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    REI OUTLET

    Outdoor ResearchAlpine Onset Merino Base Layer Bottoms - Women's

    $49.73
    Save 49%
    compared to  $99.00
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET

    Terramar4.0 Beast Base Layer Pants - Men's

    $25.73
    Save 60%
    compared to  $65.00
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Big
    REI OUTLET
    Top Rated

    REI Co-opMidweight Base Layer Bottoms - Kids'

    $9.83
    Save 71%
    compared to  $34.95
    15 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
1–30 of 32 products
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