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Red Men's Underwear

(13 products)

Products (13)

Sort: Best Match

Sale Ends May 25
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
$67.39
Save 25%
compared to $89.95
137 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Sale Ends May 25
Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$59.89
Save 25%
compared to $79.95
228 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Sale Ends May 25
REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
$33.69
Save 25%
compared to $44.95
41 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$49.83 - $93.69
Save 25% - 60%
compared to $125.00
1539 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
Arc'teryxRho LT Zip-Neck Base Layer Top - Men's
$120.00
111 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Sale Ends May 25
Top Rated
REI Co-opLightweight Crew Base Layer Top - Men's
$26.19
Save 25%
compared to $34.95
32 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Arc'teryxRho LT Base Layer Bottoms - Men's
$59.83 - $100.00
61 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
StanceRockford Boxer Briefs - Men's
$18.73
Save 30%
compared to $27.00
0 reviews
Size Type:
Regular
REI OUTLET
PatagoniaCapilene Midweight Zip-Neck Long Underwear Top - Men's
$63.73
Save 35%
compared to $99.00
80 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Sale Ends May 25
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$89.99
Save 25%
compared to $120.00
228 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
StanceCompression Nylon Boxer Briefs - Men's
$26.73
Save 31%
compared to $39.00
2 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
REI OUTLET
KUHLReactiv Lite Grid Quarter-Zip Base Layer Top - Men's
$119.00
12 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Arc'teryxIonia Merino Wool Long-Sleeve Base Layer Top - Men's
$120.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular, Big
Lorem

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Get $130 in value

When approved for the REI Co-op Mastercard by May 25, you’ll get $30 in card rewards. Plus, you can earn a $100 REI gift card after your first non-REI purchase within 60 days from account opening. Terms apply.
Apply now