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Women's Base Layer Bottoms

(88 products)

Products (88)

Sort: Best Match

REI Co-opMidweight Base Layer Tights - Women's
$54.95
90 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus, Petite
Top Rated
REI Co-opLightweight Base Layer Tights - Women's
$39.95
7 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI Co-opMerino 185 Base Layer Bottoms - Women's
$79.95
103 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$110.00 - $115.00
735 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$81.73
Save 28%
compared to $115.00
246 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Plus, Regular
REI OUTLET
tasc PerformanceElevation Merino Base Layer Bottoms - Women's
$49.73
Save 37%
compared to $79.00
52 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI OUTLET
Terramar2.0 Cloud Nine Midweight Base Layer Capri Pants - Women's
$28.73
Save 28%
compared to $40.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
CraftCore Dry Active Comfort Base Layer Pants - Women's
$29.73
Save 33%
compared to $44.95
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
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
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$90.00
13 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes
$19.83 - $79.95
8 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus
Top Rated
REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
$29.83 - $69.93
Save 30% - 70%
compared to $99.95
18 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
IcebreakerMerino 200 Oasis Thermal Base Layer Leggings - Women's
$78.73
Save 25%
compared to $105.00
67 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
REI OUTLET
Top Rated
Nani SwimwearUinta Base Layer Bottoms - Women's
$29.83
Save 60%
compared to $75.00
5 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
SmartwoolIntraknit Active Base Layer Bottoms - Women's
$79.93
Save 27%
compared to $110.00
6 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolIntraknit Thermal Max Merino Base Layer Bottoms - Women's
$100.73
Save 25%
compared to $135.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Kari TraaLucie Base Layer Pants - Women's
$59.73
Save 25%
compared to $80.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
IcebreakerMerino 200 Oasis Thermal Leggings - Women's
$105.00
67 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
REI Co-opLightweight Base Layer Tights - Women's Plus Sizes
$9.83
Save 75%
compared to $39.95
12 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus
CraftActive Intensity Base Layer Pants - Women's
$31.73
Save 42%
compared to $54.95
13 reviews with an average rating of 2.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Arc'teryxKyanite Base Layer Bottoms - Women's
$96.73
Save 19%
compared to $120.00
11 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
PatagoniaCapilene Midweight Base Layer Bottoms - Women's
$89.00
25 reviews with an average rating of 4.1 out of 5 stars
Size Type:
Regular, Plus
Kari TraaFryd Base Layer Pants - Women's
$60.00
15 reviews with an average rating of 3.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Arc'teryxRho Base Layer Bottoms - Women'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:
Regular, Plus
REI OUTLET
Arc'teryxRho Base Layer Bottoms - Women's
$100.00
28 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
SmartwoolClassic Thermal Merino Lettuce Edge Base Layer Bottoms - Women's
$82.73
Save 28%
compared to $115.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Free CountryMicrotech Heat Cocaber Base Layer Bottoms - Women's
$34.73
Save 30%
compared to $50.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Icebreaker260 Tech High-Rise Base Layer Leggings - Women's
$125.00
13 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$130.00
27 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes
$115.00 - $120.00
19 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Plus
Top Rated
The North FaceSummit Series Pro 120 Base Layer Tights - Women's
$100.00
13 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Ultralightweight
Size Type:
Regular, Plus
Kari TraaRose Capri High-Waist Base Layer Bottoms - Women's
$100.00
3 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Kari TraaRose High-Waisted Base Layer Pants - Women's
$110.00
24 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's
$99.00
14 reviews with an average rating of 3.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Top Rated
Arms of Andes300 Lightweight Alpaca Wool Base Layer Leggings - Women's
$105.00
8 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
The North FaceFD Pro 160 Base Layer Tights - Women's
$70.00
47 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Plus
The North FaceSummit Pro 120 Base Layer Tights - Women's
$100.00
32 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$92.73
Save 28%
compared to $130.00
27 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
New arrival
KUHLReactiv Lite Grid Base Layer Bottoms - Women's
$99.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolIntraknit Active Base Layer Bottoms - Women's
$76.73
Save 30%
compared to $110.00
1 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Active Base Layer Bottoms - Women's
$76.73
Save 30%
compared to $110.00
0 reviews
Size Type:
Regular
REI OUTLET
IcebreakerMerino 260 Vertex Natural Shades Base Layer Leggings - Women's
$104.73
Save 25%
compared to $140.00
3 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
REI OUTLET
Top Rated
Icebreaker175 Everyday Base Layer Leggings - Women's
$63.73
Save 25%
compared to $85.00
16 reviews with an average rating of 4.9 out of 5 stars
Size Type:
Regular
REI OUTLET
Kari TraaRose High-Waist Base Layer Capris - Women's
$74.73
Save 25%
compared to $100.00
3 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Kari TraaLune Base Layer Pants - Women's
$48.73
Save 25%
compared to $65.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Top Rated
Arc'teryxKyanite Base Layer Bottoms - Women's
$84.83
Save 29%
compared to $120.00
14 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Kari TraaLucie Base Layer Bottoms - Women's
$39.83
Save 50%
compared to $80.00
2 reviews with an average rating of 2.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Helly HansenH1 Pro Lifa Seamless Base Layer Bottoms - Women's
$82.73
Save 24%
compared to $110.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaRose High-Waist Base Layer Pants - Women's
$76.73
Save 30%
compared to $110.00
24 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
IcebreakerMerino 200 Sonebula Thermal Base Layer Leggings - Women's
$120.00
10 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's
$81.93
Save 25%
compared to $110.00
1 reviews with an average rating of 1.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
BurtonMidweight X Base Layer Pants - Women's
$36.83
Save 50%
compared to $74.95
4 reviews with an average rating of 3.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
IcebreakerMerino 260 Tech Thermal Base Layer Leggings - Women's
$93.73
Save 25%
compared to $125.00
21 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
REI OUTLET
Kari TraaKlara High-Waisted Base Layer Pants - Women's
$62.73
Save 30%
compared to $90.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Helly HansenLifa Active Base Layer Bottoms - Women's
$39.73
Save 27%
compared to $55.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaFierce Base Layer Pants - Women's
$39.73
Save 33%
compared to $60.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Icebreaker200 Oasis Macro Forms Base Layer Leggings - Women's
$85.73
Save 25%
compared to $115.00
4 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
REI OUTLET
Kari TraaFryd Base Layer Pants - Women's
$37.73 - $44.73
Save 25% - 37%
compared to $55.00 - $60.00
15 reviews with an average rating of 3.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaFloke Base Layer Pants - Women's
$64.73
Save 35%
compared to $100.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Helly HansenLIFA Merino Midweight 2-In-1 Base Layer Pants - Women's
$74.73
Save 25%
compared to $100.00
3 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Free CountryForce Grid Fleece Base Layer Bottoms - Women's
$34.73
Save 36%
compared to $55.00
3 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's
$69.73
Save 36%
compared to $110.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Kari TraaFryd Base Layer Pants - Women's
$44.73
Save 25%
compared to $60.00
14 reviews with an average rating of 3.7 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Kari TraaSmekker Base Layer Pants - Women's
$89.73
Save 25%
compared to $120.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
IcebreakerMerino Base Layer Leggings - Women's
$149.73
Save 25%
compared to $200.00
3 reviews with an average rating of 4.3 out of 5 stars
Size Type:
Regular
REI OUTLET
Kari TraaAlma Base Layer Pants - Women's
$52.73
Save 24%
compared to $70.00
0 reviews
Underwear Weight:
Ultralightweight
Size Type:
Regular
REI OUTLET
Kari TraaMalia Base Layer Pants - Women's
$52.73
Save 24%
compared to $70.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Kari TraaLilja Base Layer Pants - Women's
$49.73
Save 24%
compared to $66.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
Icebreaker200 Oasis Sonebula Base Layer Leggings - Women's
$89.73
Save 25%
compared to $120.00
1 reviews with an average rating of 3.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
TerramarC-Suite Fusion Thermal Pants - Women's
$46.73
Save 28%
compared to $65.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Terramar3.0 Thermawool Base Layer Tights - Women's
$52.73
Save 24%
compared to $70.00
2 reviews with an average rating of 1.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
ArtilectDarkhorse 185 Zoned Base Layer Leggings - Women's
$99.73
Save 37%
compared to $160.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Kari TraaRose Light High-Waisted Base Layer Pants - Women's
$82.73
Save 24%
compared to $110.00
1 reviews with an average rating of 2.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Icebreaker200 ZoneKnit Thermal Base Layer Leggings - Women's
$109.73
Save 26%
compared to $150.00
4 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Wild RyeJane Leggings - Women's
$64.73
Save 40%
compared to $109.00
3 reviews with an average rating of 3.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Free CountryCloud Knit Base Layer Bottoms - Women's
$31.73
Save 29%
compared to $45.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Helly HansenLifa Merino Midweight Base Layer Pants - Women's
$74.93
Save 25%
compared to $100.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Plus
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, Plus
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, Plus
REI OUTLET
Icebreaker125 ZoneKnit Thermal Base Layer Leggings - Women's
$93.73
Save 25%
compared to $125.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
TerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Joggers - Women's
$56.73
Save 29%
compared to $80.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
ArtilectFlatiron 185 Base Layer Leggings - Women's
$109.73
Save 31%
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
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$33.83
Save 62%
compared to $90.00
95 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus
Kari TraaFaith Base Layer Pants - Women's
$39.83
Save 63%
compared to $110.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
Wild RyeJane 7/8 Base Layer Leggings - Women's
$29.83
Save 74%
compared to $115.00
9 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SeirusHeatwave Body Mapped Full-Length Base Layer Bottoms - Women's
$59.83
Save 50%
compared to $119.95
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
HalfdaysSophia Base Layer Leggings - Women's
$49.83
Save 41%
compared to $85.00
94 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus, Regular
BurtonMidweight Base Layer Pants - Women's
$19.83
Save 69%
compared to $64.95
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular

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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