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Men's Base Layers

(122 products)
Products (122)
Sort: Best Match
    REI Co-opMidweight Base Layer Bottoms - Men's
    $54.95
    100 reviews with an average rating of 4.5 out of 5 stars
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $37.93 - $54.95
    195 reviews with an average rating of 4.6 out of 5 stars
    REI Co-opMerino 185 Base Layer Bottoms - Men's
    $79.95
    161 reviews with an average rating of 4.2 out of 5 stars
    Top Rated
    REI Co-opMidweight Base Layer Half-Zip Top - Men's
    $41.93 - $59.95
    179 reviews with an average rating of 4.6 out of 5 stars
    Top Rated
    REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
    $69.93 - $99.95
    18 reviews with an average rating of 4.8 out of 5 stars
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
    $79.95
    220 reviews with an average rating of 4.5 out of 5 stars
    Top Rated
    REI Co-opLightweight Base Layer Bottoms - Men's
    $44.95
    26 reviews with an average rating of 4.5 out of 5 stars
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
    $44.95
    33 reviews with an average rating of 4.4 out of 5 stars
    REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
    $69.93 - $99.95
    39 reviews with an average rating of 4.4 out of 5 stars
    Top Rated
    Arc'teryxRho LT Crew Neck Base Layer Top - Men's
    $100.00
    40 reviews with an average rating of 4.8 out of 5 stars
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
    $62.93 - $89.95
    121 reviews with an average rating of 4.5 out of 5 stars
    REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's
    $72.93 - $104.95
    24 reviews with an average rating of 4.1 out of 5 stars
    Top Rated
    Arc'teryxRho LT Zip-Neck Base Layer Top - Men's
    $120.00
    105 reviews with an average rating of 4.5 out of 5 stars
    Top Rated
    REI Co-opLightweight Crew Base Layer Top - Men's
    $14.83 - $34.95
    26 reviews with an average rating of 4.6 out of 5 stars
    Arc'teryxRho LT Base Layer Bottoms - Men's
    $100.00
    59 reviews with an average rating of 4.4 out of 5 stars
    Top Rated
    Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
    $120.00
    45 reviews with an average rating of 4.8 out of 5 stars
    Top Rated
    Arc'teryxRho LT Base Layer Hoody - Men's
    $120.00
    57 reviews with an average rating of 5.0 out of 5 stars
    REI Co-opMerino 185 Base Layer Top - Men's
    $69.95
    58 reviews with an average rating of 4.3 out of 5 stars
    Arc'teryxRho SV Zip-Neck Base Layer Top - Men's
    $140.00
    12 reviews with an average rating of 3.9 out of 5 stars
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
    $125.00
    639 reviews with an average rating of 4.7 out of 5 stars
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    Terms apply
    Arc'teryxRho SV Base Layer Bottoms - Men's
    $120.00
    1 reviews with an average rating of 2.0 out of 5 stars
    Top Rated
    Arc'teryxRho Insulated 3/4 Base Layer Bottoms - Men's
    $159.73
    Save 20%
    compared to  $200.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    13 reviews with an average rating of 4.6 out of 5 stars
    REI OUTLET
    Top Rated
    REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
    $89.95
    15 reviews with an average rating of 4.9 out of 5 stars
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $66.93 - $100.00
    85 reviews with an average rating of 4.5 out of 5 stars
    Arc'teryxRho LT Base Layer Bottoms - Men's
    $79.73
    Save 20%
    compared to  $100.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    11 reviews with an average rating of 3.9 out of 5 stars
    REI OUTLET
    tasc PerformanceElevation Merino Base Layer Bottoms - Men's
    $34.73 - $54.73
    Save 30% - 56%
    compared to  $79.00
    Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.
    41 reviews with an average rating of 4.0 out of 5 stars
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
    $125.00
    1511 reviews with an average rating of 4.7 out of 5 stars
    REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
    $79.95
    17 reviews with an average rating of 3.9 out of 5 stars
    Top Rated
    REI Co-opLightweight Half-Zip Base Layer Top - Men's
    $49.95
    19 reviews with an average rating of 4.6 out of 5 stars
    Top Rated
    PatagoniaCapilene Midweight Base Layer Bottoms - Men's
    $89.00
    59 reviews with an average rating of 4.5 out of 5 stars
1–30 of 122 products
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