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Underwear: Deals

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Products (272)
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    ExOfficioGive-N-Go 2.0 Full-Cut Brief Underwear - Women's
    $16.73
    Save 30%
    compared to  $24.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    948 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    ExOfficioGive-N-Go 2.0 Bikini Briefs - Women's
    $14.73
    Save 26%
    compared to  $20.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    1904 reviews with an average rating of 4.4 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    ExOfficioGive-N-Go 2.0 Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    963 reviews with an average rating of 4.6 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    ExOfficioGive-N-Go Sport 2.0 Sport Mesh Bikini Briefs - Women's
    $18.73
    Save 27%
    compared to  $26.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    490 reviews with an average rating of 4.4 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    SaxxVibe Xtra Soft Comfort Boxer Briefs - Men's
    $24.73
    Save 27%
    compared to  $34.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    1 reviews with an average rating of 5.0 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    SaxxVolt Breathable Mesh Boxer Briefs - Men's
    $26.73
    Save 23%
    compared to  $35.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    8 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $37.93 - $54.95
    195 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    REI Co-opActive Thong Underwear - Women's
    $6.83 - $16.95
    25 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Plus
    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
    $69.93 - $99.95
    39 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Women's
    $69.93 - $99.95
    43 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
    REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
    $69.93 - $99.95
    31 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Plus
    Arms of Andes160 Ultralight Alpaca Wool Crewneck Base Layer T-Shirt - Men's
    $59.93
    Save 25%
    compared to  $80.00
    7 reviews with an average rating of 3.7 out of 5 stars
    Underwear Weight:
    Ultralightweight
    Size Type:
    Regular, Big
    Top Rated
    IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
    $69.93 - $120.00
    213 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    ExOfficioGive-N-Go Sport Mesh 2.0 Hipster Underwear - Women's
    $18.73
    Save 27%
    compared to  $26.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    326 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    SaxxQuest Boxer Briefs - Men's
    $24.73
    Save 27%
    compared to  $34.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    6 reviews with an average rating of 4.8 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    REI Co-opMidweight Base Layer Half-Zip Top - Men's
    $41.93 - $59.95
    178 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    ExOfficioGive-N-Go 2.0 Sport Mesh Thong Underwear - Women's
    $16.73
    Save 30%
    compared to  $24.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    134 reviews with an average rating of 3.9 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    ExOfficioEveryday Hipster Underwear - Women's
    $16.73
    Save 30%
    compared to  $24.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    106 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    tasc PerformanceElevation Merino Base Layer Bottoms - Women's
    $54.73
    Save 30%
    compared to  $79.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    65 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
  • The R E I Co-op Mastercard. Earn 15% total R E I rewards.

    Earn 15% in total rewards

    Get 5% on all REI Co-op purchases plus the 10% Co-op Member Reward you earn on eligible full-price purchases.



    Terms apply
    PatagoniaCapilene Thermal Weight Zip-Neck Top - Men's
    $75.93 - $115.00
    25 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    Top Rated
    ExOfficioGive-N-Go 2.0 Thong Underwear - Women's
    $12.73
    Save 29%
    compared to  $18.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    64 reviews with an average rating of 4.7 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
    $62.93 - $89.95
    121 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    StioBasis PeakWool Midweight Base Layer Tights - Men's
    $103.93
    Save 30%
    compared to  $149.00
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Boody Eco WearG-String Thong Underwear - Women's - Package of 2
    $22.73
    Save 18%
    compared to  $27.95
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    10 reviews with an average rating of 4.4 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $66.93 - $100.00
    85 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    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
    RONHILLThong Underwear - Women's
    $16.73
    Save 32%
    compared to  $24.95
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    2 reviews with an average rating of 3.0 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    ExOfficioGive-N-Go 2.0 Boxer Briefs - Men's
    $22.73
    Save 24%
    compared to  $30.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    2982 reviews with an average rating of 4.5 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's
    $72.93 - $104.95
    24 reviews with an average rating of 4.1 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
1–30 of 272 products
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