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Men's Underwear

(163 products)
Products (163)
Sort: Best Match
    ExOfficioEveryday Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    209 reviews with an average rating of 3.9 out of 5 stars
    Size Type:
    Regular, Big
    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-opHeavyweight Merino Base Layer Half-Zip Top - Men's
    $49.83 - $104.95
    31 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    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
    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
    ExOfficioEveryday Briefs - Men's
    $16.73
    Save 35%
    compared to  $26.00
    280 reviews with an average rating of 4.1 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    ExOfficioGive-N-Go 2.0 Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    987 reviews with an average rating of 4.6 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolWind Boxer Briefs - Men's
    $44.73
    Save 25%
    compared to  $60.00
    0 reviews
    Size Type:
    Regular, Big
    REI OUTLET
    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 Boxers - Men's
    $19.73
    Save 34%
    compared to  $30.00
    0 reviews
    Size Type:
    Regular, Big
    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
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $84.73
    Save 26%
    compared to  $115.00
    318 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    ExOfficio6" GNG Sport 2.0 Boxer Briefs - Men's
    $21.73
    Save 32%
    compared to  $32.00
    1212 reviews with an average rating of 4.5 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    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
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $26.83 - $54.95
    211 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
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    REI Co-opMerino 185 Base Layer Bottoms - Men's
    $79.95
    167 reviews with an average rating of 4.2 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
    49 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    StanceTiki Tides Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    1 reviews with an average rating of 5.0 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    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
    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
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    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $68.83 - $125.00
    1539 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opMidweight Base Layer Half-Zip Top - Men's
    $29.83 - $59.95
    193 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    SaxxVolt Breathable Mesh Boxer Briefs - Men's
    $26.73
    Save 23%
    compared to  $35.00
    12 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular
    REI OUTLET
    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
    Top Rated
    REI Co-opMidweight Base Layer Bottoms - Men's
    $54.95
    104 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    tasc PerformanceElevation Merino T-Shirt - Men's
    $46.73 - $54.73
    Save 30% - 40%
    compared to  $79.00
    55 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
    $77.83 - $150.00
    209 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Men's
    $89.73
    Save 25%
    compared to  $120.00
    61 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    New arrival
    StanceStone Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    New arrival
    StanceBlack Tie Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
1–30 of 163 products
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