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Mens Thermals

(95 products)

Products (95)

Sort: Best Match

Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$85.93 - $115.00
1506 reviews with an average rating of 4.7 out of 5 stars
SmartwoolThermal Merino Reversible Neck Gaiter
$23.73
Save 25%
compared to $32.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
36 reviews with an average rating of 4.2 out of 5 stars
REI OUTLET
REI Co-opSwiftland Thermal Running Crew Pullover - Men's
$39.83 - $79.95
8 reviews with an average rating of 4.4 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
$115.00
615 reviews with an average rating of 4.7 out of 5 stars
REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
$49.83 - $99.95
22 reviews with an average rating of 4.4 out of 5 stars
La SportivaBushido II Trail-Running Shoes - Men's
$98.73
Save 36%
compared to $155.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
13 reviews with an average rating of 3.9 out of 5 stars
REI OUTLET
Picture Organic ClothingObject Snow Pants - Men's
$68.83 - $114.83
Save 50% - 70%
compared to $230.00
1 reviews with an average rating of 2.0 out of 5 stars
Top Rated
REI Co-opSwiftland Thermal Running Half-Zip Pullover - Men's
$44.83 - $89.95
19 reviews with an average rating of 4.5 out of 5 stars
SmartwoolThermal Merino Stash Beanie
$16.83
Save 51%
compared to $35.00
4 reviews with an average rating of 2.8 out of 5 stars
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$105.00
132 reviews with an average rating of 4.7 out of 5 stars
Top Rated
SmartwoolThermal Merino Reversible Headband
$18.73
Save 25%
compared to $25.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
83 reviews with an average rating of 4.8 out of 5 stars
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Men's
$89.73
Save 25%
compared to $120.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
18 reviews with an average rating of 4.6 out of 5 stars
REI OUTLET
PatagoniaR1 Thermal Crew Shirt - Men's
$107.73
Save 39%
compared to $179.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
0 reviews
REI OUTLET
SmartwoolThermal Merino Gloves
$29.73
Save 25%
compared to $40.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
2 reviews with an average rating of 4.5 out of 5 stars
REI OUTLET
Top Rated
BrooksNotch Thermal Hoodie 2.0 - Men's
$67.93
Save 30%
compared to $98.00
85 reviews with an average rating of 4.8 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$120.00
18 reviews with an average rating of 4.6 out of 5 stars
La SportivaBushido III Trail-Running Shoes - Men's
$145.00 - $160.00
51 reviews with an average rating of 4.2 out of 5 stars
PatagoniaCapilene Thermal Weight Long-Underwear Bottoms - Men's
$99.00
14 reviews with an average rating of 4.0 out of 5 stars
SmartwoolThermal Merino Gloves
$40.00
253 reviews with an average rating of 3.7 out of 5 stars
Top Rated
SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
$140.00
11 reviews with an average rating of 4.9 out of 5 stars
Top Rated
Icebreaker260 Merino Tech Thermal Leggings with Fly - Men's
$125.00
52 reviews with an average rating of 4.6 out of 5 stars
Top Rated
SmartwoolThermal Merino Reversible Cuffed Beanie
$25.73
Save 26%
compared to $35.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
237 reviews with an average rating of 4.6 out of 5 stars
REI OUTLET
PatagoniaR1 Thermal Jacket - Men's
$119.73
Save 39%
compared to $199.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
1 reviews with an average rating of 5.0 out of 5 stars
REI OUTLET
PatagoniaR1 Thermal Jacket - Men's
$199.00
0 reviews
PatagoniaCapilene Thermal Hoody - Men's
$104.73
Save 24%
compared to $139.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
3 reviews with an average rating of 5.0 out of 5 stars
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$85.73
Save 25%
compared to $115.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
276 reviews with an average rating of 4.7 out of 5 stars
REI OUTLET
PatagoniaR1 Thermal Bottoms - Men's
$89.73
Save 39%
compared to $149.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
1 reviews with an average rating of 2.0 out of 5 stars
REI OUTLET
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Men's
$130.00
22 reviews with an average rating of 4.2 out of 5 stars
PatagoniaR1 Thermal Full-Zip Hoody - Men's
$153.73
Save 29%
compared to $219.00
Members use code OUT4JUL25 for $20 off $100+ at REI Outlet
0 reviews
REI OUTLET
Top Rated
SmartwoolThermal Merino Reversible Cuffed Beanie
$35.00
516 reviews with an average rating of 4.6 out of 5 stars

1–30 of 95 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