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Men's Base Layer Tops: Deals

(45 products)

Products (45)

Sort: Best Match

Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$39.83 - $79.95
173 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Top Rated
REI Co-opMidweight Base Layer Half-Zip Top - Men's
$29.83 - $59.95
140 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big, Tall
SmartwoolClassic All-Season Merino T-Shirt - Men's
$59.93 - $80.00
74 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Top Rated
REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
$37.93 - $54.95
155 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big, Tall
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
$49.83 - $89.95
102 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$69.83 - $115.00
1506 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
$66.93 - $90.00
66 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's
$70.93 - $95.00
4 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
tasc PerformanceElevation Merino T-Shirt - Men's
$49.73
Save 37%
compared to $79.00
38 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$72.93 - $105.00
134 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men's
$66.73
Save 25%
compared to $90.00
66 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$78.73
Save 25%
compared to $105.00
64 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Big, Regular
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$85.73
Save 25%
compared to $115.00
276 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Men's
$89.73
Save 25%
compared to $120.00
18 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Ortovox185 Merino Rock'n'wool Long-Sleeve Base Layer Top - Men's
$76.93
Save 30%
compared to $110.00
10 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
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
10 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's
$112.73
Save 19%
compared to $140.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Thermal Base Layer Top - Men's
$99.73
Save 26%
compared to $135.00
36 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
IcebreakerMerino 260 Tech Long Sleeve Crewe Base Layer Top - Men's
$119.73
Save 27%
compared to $165.00
5 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
REI OUTLET
Arc'teryxRho Merino Wool Zip-Neck Base Layer Top - Men's
$98.83
Save 29%
compared to $140.00
10 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Big
Sale Ends Aug 4
Top Rated
IcebreakerMerino 200 Sonebula Long-Sleeve Crewe Base Layer Top - Men's
$79.73
Save 33%
compared to $120.00
6 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Ortovox120 Comp Light Base Layer Hoody - Men's
$83.93 - $120.00
2 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Top Rated
Icebreaker200 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Men's
$109.73
Save 26%
compared to $150.00
7 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Men's
$84.73
Save 26%
compared to $115.00
5 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
CraftCORE Dry Active Comfort Base Layer Top - Men's
$39.73
Save 38%
compared to $64.95
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$92.73
Save 28%
compared to $130.00
9 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
SmartwoolIntraknit Active Base Layer Crew Shirt - Men's
$81.73
Save 25%
compared to $110.00
1 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Sale Ends Aug 4
SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Men's
$38.73
Save 70%
compared to $130.00
2 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Big, Regular
REI OUTLET
SmartwoolIntraknit Thermal Merino Base Layer Colorblock Crew - Men's
$96.73
Save 25%
compared to $130.00
11 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's
$52.73
Save 29%
compared to $75.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET

1–30 of 45 products

Sort: Best Match

Related Expert Advice articles

What material is best?

Wool is moisture-wicking and odor-resistant, while synthetic fabrics are more durable and less expensive.

Match the temp to the trek

Lightweight layers are best for moderate to cool temperatures. Midweight layers are best for cold temperatures. Heavyweight layers are best for below-freezing temperatures.

Find your fit

To be able to wick sweat efficiently, your next-to-skin layer needs to actually be next to your skin. A comfortably snug fit everywhere is your goal.

Read full article: How to Choose Base Layers