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Polyester Base Layers

(93 products)

Products (93)

Sort: Best Match

Top Rated
REI Co-opLightweight Half-Zip Base Layer Top - Women's
$49.95
13 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Top Rated
Arc'teryxRho Zip-Neck Base Layer Top - Women's
$120.00
45 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Top Rated
REI Co-opLightweight Crew Base Layer Top - Women's
$34.95
22 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Top Rated
REI Co-opLightweight Crew Base Layer Top - Men's
$14.83 - $34.95
25 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Top Rated
ColumbiaMidweight Stretch Long-Sleeve Base Layer Top - Women's
$39.93
Save 27%
compared to $55.00
225 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Men's
$99.00
66 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Kari TraaFryd Base Layer Pants - Women's
$40.73
Save 25% - 32%
compared to $55.00 - $60.00
18 reviews with an average rating of 3.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI OUTLET
SpraywayEffra Leggings Base Layer Bottoms - Women's
$36.73
Save 26%
compared to $49.95
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Arc'teryxRho SV Base Layer Bottoms - Men's
$120.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
Top Rated
REI Co-opLightweight Half-Zip Base Layer Top - Men's
$49.95
18 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big, Tall
Arc'teryxRho Boot Cut Base Layer Bottoms - Women's
$72.73
Save 19%
compared to $90.00
2 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
PatagoniaCapilene Thermal Weight Zip-Neck Top - Men's
$109.00 - $115.00
23 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's
$99.00
29 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
PatagoniaCapilene Thermal Weight Long Underwear Crew Top - Men's
$99.00
11 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
Top Rated
REI Co-opMidweight Base Layer Bottoms - Toddlers'
$24.95
9 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Terramar2.0 Cloud Nine Half-Zip Base Layer Top - Women's
$34.73
Save 30%
compared to $50.00
4 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's
$68.93 - $99.00
16 reviews with an average rating of 3.8 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Kari TraaFierce Base Layer Pants - Women's
$46.73
Save 29%
compared to $66.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaFierce Long-Sleeve Base Layer Top - Women's
$46.73
Save 29%
compared to $66.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Top Rated
REI Co-opMidweight Base Layer Crew Top - Toddlers'
$24.95
16 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
PatagoniaCapilene Thermal Weight Long Underwear Crew Top - Women's
$99.00
9 reviews with an average rating of 3.2 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
PatagoniaCapilene Thermal Weight Long-Underwear Bottoms - Men's
$99.00
16 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
SpraywayEffra Crew Base Layer Top - Women's
$36.73
Save 26%
compared to $49.95
2 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Arc'teryxRho LT Base Layer Bottoms - Men's
$79.73
Save 20%
compared to $100.00
11 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Big
REI OUTLET
Top Rated
Arc'teryxRho Hoody Base Layer Top - Women's
$120.00 - $140.00
40 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
PatagoniaCapilene Thermal Weight Boot-Length Long Underwear Bottoms - Women's
$58.93
Save 30%
compared to $85.00
7 reviews with an average rating of 3.4 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
PatagoniaCapilene Thermal Weight Zip-Neck Long Underwear Top - Women's
$109.00 - $115.00
14 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Hot ChillysOriginals Print Base Layer Crew - Kids'
$39.73
Save 27%
compared to $55.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SpraywayEffra Jacket Base Layer Top - Women's
$42.73
Save 34%
compared to $64.95
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
REI OUTLET
SpraywayEffra Hoody Base Layer Top - Women's
$49.73
Save 28%
compared to $69.95
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET

31–60 of 93 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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