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Base Layers: Deals

(173 products)

Products (173)

Sort: Best Match

Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men's
$89.93 - $140.00
75 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
ArtilectDarkhorse 185 Zoned Crew Base Layer Top - Women's
$81.73
Save 48%
compared to $160.00
3 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Icebreaker260 Tech Base Layer Leggings - Women's
$89.93 - $125.00
33 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Heavyweight
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
REI Co-opLightweight Crew Base Layer Top - Women's
$20.93 - $34.95
22 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
IcebreakerMerino 200 Oasis High-Rise Base Layer Leggings - Women's
$79.93 - $130.00
3 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$92.73
Save 28%
compared to $130.00
13 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
Icebreaker260 Tech Long-Sleeve Crewe Base Layer Top - Women's
$89.93 - $140.00
47 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
Top Rated
Icebreaker200 Sonebula Leggings - Men's
$89.73
Save 25%
compared to $120.00
5 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
Free CountryCloud Knit Base Layer Bottoms - Women's
$18.73
Save 58%
compared to $45.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
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
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
IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$119.73
Save 25%
compared to $160.00
7 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Free CountryCloud Knit Crewneck Base Layer Top - Men's
$26.73
Save 33%
compared to $40.00
6 reviews with an average rating of 3.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Free CountryForce Grid Fleece Base Layer Bottoms - Women's
$34.73
Save 36%
compared to $55.00
9 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI OUTLET
Top Rated
Black DiamondSolution 150 Merino Base Layer Crew Top - Women's
$99.73
Save 26%
compared to $135.00
23 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
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
Free CountryForce Grid Fleece Base Layer Bottoms - Men's
$29.73
Save 33%
compared to $45.00
16 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
Helly HansenLifa Merino Midweight Graphic Base Layer Top - Women's
$79.73 - $82.73
Save 24% - 27%
compared to $110.00
5 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Kari TraaSmekker Half-Zip Base Layer Top - Women's
$89.73
Save 30%
compared to $130.00
19 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Helly HansenLIFA Merino Midweight 2-In-1 Graphic Half-Zip Base Layer Top - Women's
$86.73
Save 27%
compared to $120.00
1 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Free CountryCloud Knit Base Layer Bottoms - Men's
$26.73
Save 33%
compared to $40.00
2 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Helly HansenGraphic Lifa Merino Base Layer Set - Kids'
$74.73
Save 32%
compared to $110.00
1 reviews with an average rating of 1.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Arc'teryxRho Hybrid Insulated Base Layer Bottoms - Women's
$145.73
Save 19%
compared to $180.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Kari TraaRose Light High-Waisted Base Layer Pants - Women's
$81.73
Save 25%
compared to $110.00
3 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Terramar3.0 Thermawool Half-Zip Base Layer Top - Women's
$47.73
Save 36%
compared to $75.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Free CountryMicrotech Heat Cocarber Base Layer Bottoms - Women's
$39.73
Save 33%
compared to $60.00
10 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
$96.73
Save 25%
compared to $130.00
129 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Hot ChillysOriginals Solid Base Layer Crew - Kids'
$34.73
Save 26%
compared to $47.50
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Helly HansenLIFA Merino Midweight Graphic Crew Base Layer - Women's
$79.73
Save 27%
compared to $110.00
4 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET

31–60 of 173 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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