Skip to search results
loaded 77 results

Men's Underwear: Deals

(77 products)
Products (77)
Remove deals filter:Deals
Sort: Best Match
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $46.73 - $54.73
    Save 30% - 40%
    compared to  $79.00
    44 reviews with an average rating of 3.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    REI OUTLET
    StanceStone Blue Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Men's
    $89.73
    Save 25%
    compared to  $120.00
    64 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $19.83 - $54.95
    214 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $84.73
    Save 26%
    compared to  $115.00
    323 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    PatagoniaCapilene Midweight Base Layer Bottoms - Men's
    $70.93
    Save 20%
    compared to  $89.00
    60 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    ExOfficioEveryday Boxers - Men's
    $19.73
    Save 34%
    compared to  $30.00
    2 reviews with an average rating of 3.5 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    SmartwoolClassic Thermal Merino Base Layer Hoodie - Men's
    $108.73
    Save 25%
    compared to  $145.00
    3 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    StanceGreen Boxers - Men's
    $19.73
    Save 34%
    compared to  $30.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceFlower Flora Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceButter Blend Boxers - Men's
    $22.73
    Save 28%
    compared to  $32.00
    6 reviews with an average rating of 3.7 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    StanceCheck Me Out Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceYacht Club Wholester Boxer Briefs - Men's
    $24.73
    Save 29%
    compared to  $35.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceCurren Wholester Boxer Briefs - Men's
    $19.73 - $26.73
    Save 27% - 43%
    compared to  $35.00 - $37.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    Arc'teryxRho LT Zip-Neck Base Layer Top - Men's
    $96.93 - $120.00
    111 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Arc'teryxRho LT Base Layer Bottoms - Men's
    $59.83 - $100.00
    61 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    SmartwoolEveryday 6" Knit Boxer Briefs - Men's
    $35.73
    Save 25%
    compared to  $48.00
    17 reviews with an average rating of 2.3 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Men's
    $78.93
    Save 20%
    compared to  $99.00
    82 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SaxxVolt Breathable Mesh Boxer Briefs - Men's
    $26.73
    Save 23%
    compared to  $35.00
    108 reviews with an average rating of 4.7 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men's
    $66.73
    Save 25%
    compared to  $90.00
    109 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    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
    Top Rated
    Arc'teryxRho LT Crew Neck Base Layer Top - Men's
    $75.93 - $100.00
    46 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    StanceBotanical Bliss Wholester Boxer Briefs - Men's
    $24.73
    Save 29%
    compared to  $35.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceStone Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceTiki Tides Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    PatagoniaCapilene Midweight Crew Base Layer Top - Men's
    $70.93
    Save 20%
    compared to  $89.00
    93 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    tasc PerformanceElevation Merino T-Shirt - Men's
    $46.73 - $54.73
    Save 30% - 40%
    compared to  $79.00
    56 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    StanceCompression Nylon Boxer Briefs - Men's
    $26.73
    Save 31%
    compared to  $39.00
    3 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Base Layer Hoodie - Men's
    $134.73
    Save 25%
    compared to  $180.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Arc'teryxRho SV Zip-Neck Base Layer Top - Men's
    $98.83 - $112.93
    Save 19% - 29%
    compared to  $140.00
    15 reviews with an average rating of 3.5 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    StanceBrong Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
1–30 of 77 products
Sort: Best Match

Related Expert Advice articles