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Base Layers: Deals

(170 products)

Products (170)

Sort: Best Match

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
IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Base Layer Top - Men's
$99.93 - $150.00
45 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$99.73
Save 26%
compared to $135.00
15 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Men's
$79.93 - $130.00
34 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 - Women's
$81.73
Save 28%
compared to $115.00
427 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Top Rated
Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Women's
$79.93 - $130.00
38 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Helly HansenHH Durawool Base Layer T-Shirt - Women's
$56.73
Save 29%
compared to $80.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaRose Long-Sleeve Base Layer Top - Women's
$79.73
Save 27%
compared to $110.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Top Rated
SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men's
$66.73
Save 25%
compared to $90.00
95 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Top Rated
Free CountryForce Grid Fleece Base Layer Top - Men's
$29.73
Save 33%
compared to $45.00
16 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Big
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
Top Rated
Arc'teryxRho Insulated 3/4 Base Layer Bottoms - Men's
$159.73
Save 20%
compared to $200.00
13 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Big, Regular
REI OUTLET
Top Rated
ColumbiaMidweight Stretch Base Layer Tights - Women's
$39.93
Save 27%
compared to $55.00
197 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's
$96.73
Save 25%
compared to $130.00
50 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Top Rated
ColumbiaMidweight Stretch Long-Sleeve Base Layer Top - Women's
$39.93
Save 27%
compared to $55.00
224 reviews with an average rating of 4.7 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
ArtilectFlatiron 185 Base Layer Leggings - Women's
$76.73
Save 52%
compared to $160.00
1 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
ArtilectDarkhorse 185 Zoned Base Layer Leggings - Women's
$82.73
Save 48%
compared to $160.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SmartwoolClassic All-Season Merino Base Layer Long-Sleeve Shirt - Women's
$66.73
Save 25%
compared to $90.00
85 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Thermal Max Merino Base Layer Pattern Hoodie - Women's
$114.73
Save 30%
compared to $165.00
2 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
REI OUTLET
Arms of Andes300 Lightweight Alpaca Wool Base Layer Leggings - Men's
$85.93
Save 25%
compared to $115.00
15 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Hot ChillysOriginals Solid Base Layer Pants - Kids'
$34.73
Save 26%
compared to $47.50
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
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
Terramar3.0 Thermawool Base Layer Tights - Women's
$44.73
Save 36%
compared to $70.00
3 reviews with an average rating of 1.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$92.73
Save 28%
compared to $130.00
29 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaRose Light Half-Zip Base Layer Top - Women's
$89.73
Save 25%
compared to $120.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Thermal Merino Base Layer Colorblock Crew - Men's
$96.73
Save 25%
compared to $130.00
15 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
IcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Women's
$89.73
Save 35%
compared to $140.00
2 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Active Base Layer Bottoms - Men's
$81.73
Save 25%
compared to $110.00
4 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Helly HansenHH Durawool Crew Long-Sleeve Base Layer Top - Men's
$64.73
Save 28%
compared to $90.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET

61–90 of 170 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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