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Men's Underwear

(191 products)
Products (191)
Sort: Best Match
  • Sale Ends Dec 1
    SmartwoolClassic All-Season Merino 3/4 Base Layer Bottoms - Men's
    $56.19
    Save 25%
    compared to  $75.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    SmartwoolIntraknit Active Base Layer Bottoms - Men's
    $81.73
    Save 25%
    compared to  $110.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    2 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Big, Regular
    REI OUTLET
  • Sale Ends Dec 1
    Top Rated
    SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
    $104.99
    Save 25%
    compared to  $140.00
    11 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    StanceTiki Tides Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
    $99.73
    Save 26%
    compared to  $135.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    11 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
    ExOfficioEveryday Boxer Briefs - Men's
    $22.73
    Save 24%
    compared to  $30.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    195 reviews with an average rating of 4.0 out of 5 stars
    Size Type:
    Big
    REI OUTLET
    Top Rated
    IcebreakerMerino 200 Sonebula Long-Sleeve Crewe Base Layer Top - Men's
    $89.73
    Save 25%
    compared to  $120.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    7 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    StanceStacks Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    Picture Organic ClothingNangha Base Layer Top - Men's
    $44.83
    Save 50%
    compared to  $90.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Dec 1
    SmartwoolThermal Merino Base Layer Hoodie - Men's
    $108.69
    Save 25%
    compared to  $145.00
    3 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends Dec 8
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
    $62.89
    Save 30%
    compared to  $89.95
    13 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Tall, Big
    CraftCore Dry Active Comfort Base Layer Pants - Men's
    $32.73
    Save 34%
    compared to  $49.95
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    3 reviews with an average rating of 3.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Free FlyElevate Boxer Briefs - Men's
    $28.73
    Save 24%
    compared to  $38.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    63 reviews with an average rating of 4.0 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
    IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Thermal Base Layer Top - Men's
    $99.73
    Save 26%
    compared to  $135.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    39 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    Icebreaker200 Sonebula Leggings - Men's
    $89.73
    Save 25%
    compared to  $120.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    5 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Big
    REI OUTLET
    Icebreaker200 ZoneKnit Merino Thermal Base Layer Leggings - Men's
    $109.73
    Save 26%
    compared to  $150.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    7 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends Dec 8
    IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Base Layer Top - Men's
    $101.19
    Save 25%
    compared to  $135.00
    39 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    StanceGood Times Boxer Briefs - Men's - Package of 2
    $29.73
    Save 33%
    compared to  $45.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    Arc'teryxRho LT Crew Neck Base Layer Top - Men's
    $100.00
    35 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    StanceIn Paradise Boxer Briefs - Men's
    $18.73
    Save 30%
    compared to  $27.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    SmartwoolIntraknit Active Base Layer Crew Shirt - Men's
    $74.73
    Save 32%
    compared to  $110.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    2 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Big
    REI OUTLET
    SaxxQuest Quick-Dry Boxer Briefs - Men's
    $34.00
    0 reviews
    Size Type:
    Regular, Big
    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
    SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's
    $47.73
    Save 36%
    compared to  $75.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    StanceArgile Boxer Briefs - Men's
    $19.73
    Save 34%
    compared to  $30.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    StanceWild Ones Boxer Briefs - Men's - Package of 2
    $29.73
    Save 33%
    compared to  $45.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
    $119.73
    Save 25%
    compared to  $160.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    StanceRome Boxer Briefs - Men's
    $16.73
    Save 33%
    compared to  $25.00
    Members use code CYBER2025 to save an extra 25% on this item, thru 12/1
    0 reviews
    Size Type:
    Regular
    REI OUTLET
    PatagoniaCapilene Thermal Weight Long-Underwear Bottoms - Men's
    $99.00
    14 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    PatagoniaCapilene Thermal Weight Long Underwear Crew Top - Men's
    $99.00
    10 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
61–90 of 191 products
Sort: Best Match

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