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Thermals

(256 products)

Products (256)

Sort: Best Match

Arc'teryxTaema Thermal Hoody - Women's
$79.73
Save 20%
compared to $100.00
4 reviews with an average rating of 4.5 out of 5 stars
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$115.00
1149 reviews with an average rating of 4.7 out of 5 stars
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
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$81.73
Save 28%
compared to $115.00
247 reviews with an average rating of 4.4 out of 5 stars
REI OUTLET
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$110.00 - $115.00
736 reviews with an average rating of 4.5 out of 5 stars
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
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
SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
$115.00
617 reviews with an average rating of 4.7 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
$120.00
30 reviews with an average rating of 4.8 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
REI Co-opSwiftland Thermal Running Crew Pullover - Women's
$39.83 - $79.95
19 reviews with an average rating of 4.4 out of 5 stars
PatagoniaR1 Thermal Jacket - Men's
$138.93 - $199.00
0 reviews
Top Rated
REI Co-opSwiftland Thermal Running Half-Zip Pullover - Women's
$44.83 - $89.95
24 reviews with an average rating of 4.6 out of 5 stars
Top Rated
The North FaceDotknit Thermal Quarter-Zip Pullover - Women's
$67.73
Save 24%
compared to $90.00
124 reviews with an average rating of 4.8 out of 5 stars
REI OUTLET
SmartwoolThermal Merino Reversible Neck Gaiter
$23.73
Save 25%
compared to $32.00
36 reviews with an average rating of 4.2 out of 5 stars
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$81.73
Save 28%
compared to $115.00
367 reviews with an average rating of 4.7 out of 5 stars
REI OUTLET
SmartwoolThermal Merino Neck Gaiter - Kids'
$17.73
Save 29%
compared to $25.00
0 reviews
REI OUTLET
PatagoniaLong-Sleeve Capilene Thermal Crew Top - Women's
$82.93 - $119.00
13 reviews with an average rating of 4.3 out of 5 stars
REI Co-opSwiftland Thermal Running Pants - Men's
$94.95
13 reviews with an average rating of 4.4 out of 5 stars
SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'
$44.73
Save 31%
compared to $65.00
5 reviews with an average rating of 3.6 out of 5 stars
REI OUTLET
Top Rated
IcebreakerMerino 260 Tech Thermal Base Layer Leggings - Kids'
$49.73
Save 28%
compared to $70.00
7 reviews with an average rating of 5.0 out of 5 stars
REI OUTLET
Top Rated
SmartwoolThermal Merino Reversible Headband
$18.73
Save 25%
compared to $25.00
85 reviews with an average rating of 4.8 out of 5 stars
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$120.00
20 reviews with an average rating of 4.7 out of 5 stars
PatagoniaLong-Sleeve Capilene Thermal Crew Shirt - Women's
$71.73 - $89.73
Save 24% - 39%
compared to $119.00
13 reviews with an average rating of 4.3 out of 5 stars
REI OUTLET
REI Co-opSwiftland Thermal Running Crew Pullover - Men's
$39.83 - $79.95
9 reviews with an average rating of 4.4 out of 5 stars
REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
$99.95
7 reviews with an average rating of 4.4 out of 5 stars
Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'
$48.73
Save 25%
compared to $65.00
52 reviews with an average rating of 4.7 out of 5 stars
REI OUTLET
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$72.93 - $105.00
134 reviews with an average rating of 4.7 out of 5 stars
PatagoniaCapilene Thermal Weight Zip-Neck Top - Men's
$69.93 - $109.00
18 reviews with an average rating of 4.0 out of 5 stars
Free CountryThermal Fleece Full-Zip Jacket - Women's
$48.73
Save 30%
compared to $70.00
4 reviews with an average rating of 4.0 out of 5 stars
REI OUTLET

1–30 of 256 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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