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Merino Wool Men's Underwear

(84 products)
Products (84)
Remove features filter:Merino Wool
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    REI Co-opMerino Boxer Briefs - Men's
    $39.95
    114 reviews with an average rating of 4.2 out of 5 stars
    Size Type:
    Regular, Big
    SmartwoolActive Boxer Briefs - Men's
    $24.73
    Save 29%
    compared to  $35.00
    0 reviews
    Size Type:
    Regular, Big
    REI OUTLET
    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
    $49.83 - $99.95
    43 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    REI Co-opMerino Boxers - Men's
    $39.95
    79 reviews with an average rating of 4.3 out of 5 stars
    Size Type:
    Regular, Big
  • Sale Ends Mar 23
    REI Co-opMerino 185 Base Layer Bottoms - Men's
    $59.89
    Save 25%
    compared to  $79.95
    163 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
    $44.83 - $67.39
    Save 25% - 50%
    compared to  $89.95
    126 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
    $49.83 - $99.95
    18 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $79.93 - $125.00
    1514 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolMerino Boxer Briefs - Boxed - Men's
    $50.00
    0 reviews
    Size Type:
    Regular, Big
  • Sale Ends Mar 23
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
    $59.89
    Save 25%
    compared to  $79.95
    222 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    SmartwoolClassic All-Season Merino T-Shirt - Men's
    $59.93 - $95.00
    98 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends Mar 23
    REI Co-opMerino 185 Base Layer Top - Men's
    $52.39
    Save 25%
    compared to  $69.95
    58 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolClassic Thermal Merino 3/4 Base Layer Bottoms - Men's
    $78.73
    Save 25%
    compared to  $105.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $49.73 - $54.73
    Save 30% - 37%
    compared to  $79.00
    43 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
    $125.00
    640 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolIntraknit Boxer Briefs - Boxed - Men's
    $55.00
    0 reviews
    Size Type:
    Regular, Big
    tasc PerformanceElevation Merino T-Shirt - Men's
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    52 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Big, Regular
    REI OUTLET
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $66.93 - $100.00
    101 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
    $89.93 - $130.00
    51 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's
    $72.93 - $104.95
    27 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big, Tall
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    Terms apply
    Top Rated
    IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men's
    $125.00
    79 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's
    $100.00
    28 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
    $92.73 - $96.73
    Save 25% - 28%
    compared to  $130.00
    136 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    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
    Top Rated
    IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
    $120.00
    220 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Men's
    $96.73
    Save 25%
    compared to  $130.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
    New arrival
    SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Men's
    $115.73
    Save 25%
    compared to  $155.00
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    REI OUTLET
    Top Rated
    SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's
    $105.00
    8 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    Top Rated
    SmartwoolClassic Thermal Merino 3/4 Base Layer Bottoms - Men's
    $79.93 - $115.00
    85 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    New arrival
    SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
    $104.73
    Save 25%
    compared to  $140.00
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
1–30 of 84 products
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