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Underwear

(475 products)
Products (475)
Sort: Best Match
    ExOfficioGive-N-Go 2.0 Bikini Briefs - Women's
    $12.73
    Save 36%
    compared to  $20.00
    Save up to 30% extra on your REI Outlet purchase
    1932 reviews with an average rating of 4.4 out of 5 stars
    Size Type:
    Regular, Plus
    REI OUTLET
    REI Co-opMerino Boxer Briefs - Men's
    $39.95
    116 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Big
    REI Co-opMerino Hipster Underwear - Women's
    $29.95
    59 reviews with an average rating of 3.9 out of 5 stars
    Size Type:
    Regular, Plus
    ExOfficioGive-N-Go 2.0 Full-Cut Brief Underwear - Women's
    $16.73
    Save 30%
    compared to  $24.00
    Save up to 30% extra on your REI Outlet purchase
    966 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    ExOfficioGNG 2.0 Hipster Briefs - Women's
    $16.73
    Save 30%
    compared to  $24.00
    Save up to 30% extra on your REI Outlet purchase
    414 reviews with an average rating of 3.9 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    SaxxQuest Quick-Dry Boxer Briefs - Men's
    $34.00
    2 reviews with an average rating of 4.5 out of 5 stars
    Size Type:
    Regular, Big
    REI Co-opActive Bralette 2.0
    $35.95
    132 reviews with an average rating of 4.3 out of 5 stars
    Bra Support:
    Low Impact
    Support Style:
    Encapsulation
    Fabric:
    86% polyester/14% spandex mesh
    ExOfficioGive-N-Go Sport Mesh 2.0 Hipster Underwear - Women's
    $16.73
    Save 35%
    compared to  $26.00
    Save up to 30% extra on your REI Outlet purchase
    330 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    REI Co-opEveryday Boxers - Men's
    $24.95
    139 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Big
    REI Co-opEveryday Boxer Briefs - Men's
    $24.95
    161 reviews with an average rating of 4.1 out of 5 stars
    Size Type:
    Regular, Big
    ExOfficioEveryday Briefs - Men's
    $16.73
    Save 35%
    compared to  $26.00
    Save up to 30% extra on your REI Outlet purchase
    278 reviews with an average rating of 4.1 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    REI Co-opActive Thong Underwear - Women's
    $16.95
    29 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Plus
    Top Rated
    ExOfficioGive-N-Go 2.0 Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    Save up to 30% extra on your REI Outlet purchase
    986 reviews with an average rating of 4.6 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    SmartwoolWind Boxer Briefs - Men's
    $44.73
    Save 25%
    compared to  $60.00
    Save up to 30% extra on your REI Outlet purchase
    0 reviews
    Size Type:
    Regular, Big
    REI OUTLET
    REI Co-opActive Hipster Underwear - Women's
    $19.95
    42 reviews with an average rating of 3.8 out of 5 stars
    Size Type:
    Regular, Plus
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    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
    $44.95
    37 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    ExOfficioEveryday Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    Save up to 30% extra on your REI Outlet purchase
    209 reviews with an average rating of 3.9 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    ExOfficioGive-N-Go 2.0 Sport Mesh Thong Underwear - Women's
    $16.73
    Save 30%
    compared to  $24.00
    Save up to 30% extra on your REI Outlet purchase
    140 reviews with an average rating of 3.9 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    REI Co-opMerino 185 Base Layer Top - Men's
    $69.95
    60 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI Co-opMerino Boxers - Men's
    $39.95
    82 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Big
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    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
    $44.83 - $89.95
    133 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
    $49.83 - $99.95
    47 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    BrooksConvertible 2.0 Sports Bra
    $60.00 - $65.00
    156 reviews with an average rating of 3.8 out of 5 stars
    Bra Support:
    High Impact
    Support Style:
    Compression
    Fabric:
    Shell 1: 79% recycled polyester/21% spandex; shell 2: 78% recycled polyester/22% spandex
    Top Rated
    REI Co-opLightweight Crew Base Layer Top - Women's
    $34.95
    28 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    StanceTiki Tides Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    Save up to 30% extra on your REI Outlet purchase
    1 reviews with an average rating of 5.0 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    JanjiGroundwork Long Bra
    $72.00 - $80.00
    19 reviews with an average rating of 4.0 out of 5 stars
    Bra Support:
    Medium Impact
    Support Style:
    Compression / Encapsulation
    Fabric:
    68% nylon/32% spandex
    ExOfficioEveryday Boxers - Men's
    $19.73
    Save 34%
    compared to  $30.00
    Save up to 30% extra on your REI Outlet purchase
    0 reviews
    Size Type:
    Regular, Big
    REI OUTLET
    REI Co-opMerino Bikini Underwear - Women's
    $27.95
    62 reviews with an average rating of 4.1 out of 5 stars
    Size Type:
    Regular, Plus
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $53.83 - $100.00
    106 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
    $54.95
    324 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
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