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Merino Wool Men's Base Layers

(84 products)

Products (84)

Sort: Best Match

REI Co-opMerino 185 Base Layer Bottoms - Men's
$79.95
138 reviews with an average rating of 4.3 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
$115.00
628 reviews with an average rating of 4.7 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$115.00
1514 reviews with an average rating of 4.7 out of 5 stars
Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$79.95
199 reviews with an average rating of 4.5 out of 5 stars
Top Rated
SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
$90.00
77 reviews with an average rating of 4.5 out of 5 stars
tasc PerformanceElevation Merino Base Layer Bottoms - Men's
$34.73 - $54.73
Save 30% - 56%
compared to $79.00
Save up to 30% extra on your REI Outlet purchase, thru 12/16.
36 reviews with an average rating of 3.8 out of 5 stars
REI OUTLET
tasc PerformanceElevation Merino T-Shirt - Men's
$54.73
Save 30%
compared to $79.00
Save up to 30% extra on your REI Outlet purchase, thru 12/16.
45 reviews with an average rating of 4.3 out of 5 stars
REI OUTLET
Top Rated
REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
$99.95
10 reviews with an average rating of 4.6 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$120.00
35 reviews with an average rating of 4.7 out of 5 stars
Top Rated
IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men's
$105.00
66 reviews with an average rating of 4.7 out of 5 stars
REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
$99.95
31 reviews with an average rating of 4.4 out of 5 stars
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
$89.95
114 reviews with an average rating of 4.5 out of 5 stars
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$92.73
Save 28%
compared to $130.00
Save up to 30% extra on your REI Outlet purchase, thru 12/16.
10 reviews with an average rating of 4.0 out of 5 stars
REI OUTLET
SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's
$90.00
20 reviews with an average rating of 4.1 out of 5 stars
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$105.00
177 reviews with an average rating of 4.7 out of 5 stars
Top Rated
SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's
$95.00
7 reviews with an average rating of 4.9 out of 5 stars
New arrival
Helly HansenHH Durawool Crew Long-Sleeve Base Layer Top - Men's
$64.73
Save 28%
compared to $90.00
Save up to 30% extra on your REI Outlet purchase, thru 12/16.
0 reviews
REI OUTLET
REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
$79.95
13 reviews with an average rating of 3.9 out of 5 stars
Top Rated
SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
$140.00
13 reviews with an average rating of 4.6 out of 5 stars
Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
$89.95
13 reviews with an average rating of 4.9 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino 3/4 Base Layer Bottoms - Men's
$105.00
85 reviews with an average rating of 4.6 out of 5 stars
Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men's
$125.00
65 reviews with an average rating of 4.7 out of 5 stars
IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$119.73
Save 25%
compared to $160.00
Save up to 30% extra on your REI Outlet purchase, thru 12/16.
0 reviews
REI OUTLET
Top Rated
Icebreaker260 Merino Tech Thermal Leggings with Fly - Men's
$125.00
66 reviews with an average rating of 4.7 out of 5 stars
REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's
$104.95
17 reviews with an average rating of 4.1 out of 5 stars
Top Rated
Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
$120.00
37 reviews with an average rating of 4.8 out of 5 stars
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Men's
$130.00
27 reviews with an average rating of 4.2 out of 5 stars
Top Rated
IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$99.73
Save 26%
compared to $135.00
Save up to 30% extra on your REI Outlet purchase, thru 12/16.
13 reviews with an average rating of 4.8 out of 5 stars
REI OUTLET
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$130.00
191 reviews with an average rating of 4.4 out of 5 stars
SmartwoolClassic All-Season Merino T-Shirt - Men's
$80.00
92 reviews with an average rating of 4.0 out of 5 stars

1–30 of 84 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

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