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Blue Men's Underwear

(87 products)
Products (87)
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    REI Co-opMerino 185 Base Layer Bottoms - Men's
    $79.95
    138 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    36 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
    $115.00
    628 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI Co-opMidweight Base Layer Bottoms - Men's
    $54.95
    88 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $115.00
    1493 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $54.95
    178 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
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    45 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
    $27.93 - $39.95
    25 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $66.93 - $90.00
    77 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI Co-opMerino Boxer Briefs - Men's
    $39.95
    111 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
    $120.00
    36 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opMidweight Base Layer Half-Zip Top - Men's
    $59.95
    161 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
    Top Rated
    IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
    $105.00
    177 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    SaxxVolt Breathable Mesh Boxer Briefs - Men's
    $26.73
    Save 23%
    compared to  $35.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    6 reviews with an average rating of 4.0 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    PatagoniaCapilene Midweight Base Layer Bottoms - Men's
    $89.00
    58 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI Co-opEveryday Boxers - Men's
    $22.95
    129 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Big
    SaxxQuest Boxer Briefs - Men's
    $24.73
    Save 27%
    compared to  $34.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    3 reviews with an average rating of 4.7 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
    $78.73
    Save 25%
    compared to  $105.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    74 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    REI OUTLET
    SaxxVibe Xtra Soft Comfort Boxer Briefs - Men's
    $24.73
    Save 27%
    compared to  $34.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    0 reviews
    Size Type:
    Regular, Big
    REI OUTLET
    New arrival
    Helly HansenHH Durawool Crew Long-Sleeve Base Layer Top - Men's
    $64.73
    Save 28%
    compared to  $90.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    PatagoniaCapilene Midweight Crew Base Layer Top - Men's
    $89.00
    87 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
    $92.73
    Save 28%
    compared to  $130.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    10 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
    $120.00
    37 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI Co-opMerino Boxers - Men's
    $39.95
    69 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Big
    Top Rated
    Arc'teryxRho Insulated 3/4 Base Layer Bottoms - Men's
    $159.73
    Save 20%
    compared to  $200.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    12 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    REI Co-opLightweight Half-Zip Base Layer Top - Men's
    $29.93 - $44.95
    15 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men's
    $125.00
    65 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    SmartwoolClassic All-Season Merino T-Shirt - Men's
    $80.00
    92 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
    $99.73
    Save 26%
    compared to  $135.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    13 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    SmartwoolIntraknit Thermal Merino Base Layer Colorblock Crew - Men's
    $96.73
    Save 25%
    compared to  $130.00
    Save up to 30% extra on your REI Outlet purchase, thru 12/16.
    11 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
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