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Midweight Base Layers

(162 products)

Products (162)

Sort: Best Match

Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$56.83 - $115.00
1188 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$115.00
749 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
$54.95
181 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
$120.00
47 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
$115.00
631 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$120.00
40 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$115.00
1499 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
$54.95
297 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
REI Co-opMidweight Base Layer Tights - Women's
$54.95
110 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus, Petite
REI Co-opMidweight Base Layer Bottoms - Men's
$54.95
91 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big, Tall
Sale Ends Today
Kari TraaEdith Half-Zip Base Layer Top - Women's
$54.99
Save 50%
compared to $110.00
2 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Sale Ends Today
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$78.69
Save 25%
compared to $105.00
169 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Sale Ends Today
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$78.69
Save 25%
compared to $105.00
188 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Sale Ends Today
Top Rated
IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men's
$78.69
Save 25%
compared to $105.00
67 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Sale Ends Today
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$64.99
Save 50%
compared to $130.00
10 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
REI Co-opMidweight Base Layer Half-Zip Top - Women's
$59.95
181 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Sale Ends Today
Top Rated
IcebreakerMerino 200 Oasis Thermal Leggings - Women's
$78.69
Save 25%
compared to $105.00
81 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
Top Rated
REI Co-opMidweight Base Layer Bottoms - Kids'
$34.95
10 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
REI Co-opMidweight Base Layer Crew Top - Kids'
$34.95
7 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
REI Co-opMidweight Base Layer Half-Zip Top - Men's
$59.95
166 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big, Tall
Sale Ends Today
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
$64.99
Save 50%
compared to $130.00
123 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Sale Ends Today
Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's
$54.99
Save 50%
compared to $110.00
1 reviews with an average rating of 1.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Top Rated
REI Co-opMerino Midweight Base Layer Crew Top - Kids'
$49.95
29 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
REI Co-opMerino Midweight Base Layer Bottoms - Kids'
$49.95
16 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Sale Ends Today
Kari TraaRose Light High-Waisted Base Layer Pants - Women's
$54.99
Save 50%
compared to $110.00
2 reviews with an average rating of 3.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
$130.00
194 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Arc'teryxRho Boot Cut Base Layer Bottoms - Women's
$72.73
Save 19%
compared to $90.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Sale Ends Today
Top Rated
Icebreaker260 Tech High-Rise Base Layer Leggings - Women's
$93.69
Save 25%
compared to $125.00
20 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'
$65.00
6 reviews with an average rating of 3.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
$120.00
40 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big

1–30 of 162 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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