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Women's Base Layer Bottoms

(60 products)

Products (60)

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SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$125.00
768 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI Co-opMidweight Base Layer Tights - Women's
$54.95
126 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus, Petite
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$68.83 - $100.00
24 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
$49.83 - $99.95
34 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
Top Rated
REI Co-opLightweight Base Layer Tights - Women's
$44.95
11 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus, Petite
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$84.73
Save 26%
compared to $115.00
Save up to 30% extra on your REI Outlet purchase
279 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
REI Co-opMerino 185 Base Layer Bottoms - Women's
$79.95
122 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes
$68.83 - $125.00
20 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Plus
Kari TraaKlara High-Waisted Base Layer Pants - Women's
$62.73 - $66.73
Save 25% - 30%
compared to $90.00
Save up to 30% extra on your REI Outlet purchase
14 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes
$39.83
Save 50%
compared to $79.95
11 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Plus
tasc PerformanceElevation Merino Base Layer Bottoms - Women's
$46.73
Save 40%
compared to $79.00
Save up to 30% extra on your REI Outlet purchase
67 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Arc'teryxRho Base Layer Bottoms - Women's
$75.93 - $100.00
38 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Top Rated
IcebreakerMerino 200 Oasis Thermal Leggings - Women's
$51.83 - $120.00
89 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
New arrival
Arc'teryxSatoro Merino Wool Base Layer Bottoms - Women's
$95.73
Save 20%
compared to $120.00
Save up to 30% extra on your REI Outlet purchase
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Top Rated
Arc'teryxRho Hybrid Insulated Base Layer Bottoms - Women's
$143.73
Save 20%
compared to $180.00
Save up to 30% extra on your REI Outlet purchase
16 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
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SmartwoolIntraknit Merino 3/4 Base Layer Bottoms - Women's
$89.73
Save 25%
compared to $120.00
Save up to 30% extra on your REI Outlet purchase
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Top Rated
Icebreaker260 Tech High-Rise Base Layer Leggings - Women's
$125.00
24 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
HalfdaysHallie Midweight Merino Base Layer Leggings - Women's
$64.83 - $130.00
30 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Free CountryForce Grid Fleece Base Layer Bottoms - Women's
$26.73
Save 51%
compared to $55.00
Save up to 30% extra on your REI Outlet purchase
11 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI OUTLET
Top Rated
Arc'teryxRho Hybrid Insulated Base Layer Bottoms - Women's
$135.93
Save 24%
compared to $180.00
16 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Earn 15% in total rewards

Get 5% on all REI Co-op purchases plus the 10% Co-op Member Reward you earn on eligible full-price purchases.
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Kari TraaLucie Base Layer Pants - Women's
$58.73
Save 26%
compared to $80.00
Save up to 30% extra on your REI Outlet purchase
6 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
PatagoniaCapilene Midweight Base Layer Bottoms - Women's
$89.00
28 reviews with an average rating of 4.2 out of 5 stars
Size Type:
Regular, Plus
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$68.83 - $150.00
30 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
HalfdaysSophia Base Layer Leggings - Women's
$46.83 - $95.00
123 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
Top Rated
Kari TraaRose High-Waisted Base Layer Pants - Women's
$64.83 - $120.00
14 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Arc'teryxRho Base Layer Bottoms - Women's
$73.73
Save 26%
compared to $100.00
Save up to 30% extra on your REI Outlet purchase
15 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Icebreaker260 Tech Base Layer Leggings - Women's
$61.83 - $125.00
34 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
Top Rated
Arc'teryxKyanite Base Layer Bottoms - Women's
$96.93
Save 19%
compared to $120.00
29 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
SmartwoolIntraknit AS Merino Base Layer Bottoms - Women's
$125.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
Kari TraaFryd Base Layer Pants - Women's
$31.83 - $60.00
18 reviews with an average rating of 3.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular