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Merino Wool Base Layer Bottoms

(94 products)

Products (94)

Sort: Best Match

SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$115.00
743 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
$115.00
627 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Sale Ends Dec 8
REI Co-opMerino 185 Base Layer Bottoms - Men's
$55.89
Save 30%
compared to $79.95
138 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Sale Ends Dec 8
REI Co-opMerino 185 Base Layer Bottoms - Women's
$55.89
Save 30%
compared to $79.95
107 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Top Rated
REI Co-opHeavyweight Merino Base Layer Bottoms - Men's
$99.95
10 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big, Tall
Sale Ends Dec 8
Top Rated
IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men's
$78.69
Save 25%
compared to $105.00
65 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
Top Rated
REI Co-opHeavyweight Merino Base Layer Bottoms - Women's
$99.95
23 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
Sale Ends Dec 8
Top Rated
Icebreaker260 Merino Tech Thermal Leggings with Fly - Men's
$93.69
Save 25%
compared to $125.00
65 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's
$90.00
20 reviews with an average rating of 4.1 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Sale Ends Dec 8
REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes
$55.89
Save 30%
compared to $79.95
13 reviews with an average rating of 3.9 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Tall, Big
Sale Ends Dec 8
Top Rated
Icebreaker260 Tech High-Rise Base Layer Leggings - Women's
$93.69
Save 25%
compared to $125.00
20 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Sale Ends Dec 8
Top Rated
REI Co-opMerino Midweight Base Layer Bottoms - Kids'
$34.89
Save 30%
compared to $49.95
16 reviews with an average rating of 4.6 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Sale Ends Dec 8
IcebreakerMerino 200 Oasis Thermal Leggings - Women's
$78.69
Save 25%
compared to $105.00
79 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Plus
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's
$130.00
28 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$90.00
19 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Men's
$130.00
26 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Kari TraaEdith Base Layer Pants - Women's
$74.73
Save 25%
compared to $100.00
3 reviews with an average rating of 3.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
tasc PerformanceElevation Merino Base Layer Bottoms - Men's
$34.73 - $54.73
Save 30% - 56%
compared to $79.00
35 reviews with an average rating of 3.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
Sale Ends Dec 8
Icebreaker260 Tech Base Layer Leggings - Women's
$93.69
Save 25%
compared to $125.00
27 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Plus
tasc PerformanceElevation Merino Base Layer Bottoms - Women's
$54.73
Save 30%
compared to $79.00
58 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Plus
REI OUTLET
Kari TraaKlara High-Waisted Base Layer Pants - Women's
$62.73 - $66.73
Save 25% - 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
Top Rated
SmartwoolClassic Thermal Merino 3/4 Base Layer Bottoms - Men's
$105.00
84 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolIntraknit Merino 3/4 Base Layer Bottoms - Women's
$120.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
Kari TraaSmekker Base Layer Pants - Women's
$83.73
Save 30%
compared to $120.00
1 reviews with an average rating of 2.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
SmartwoolIntraknit Thermal Merino Base Layer 3/4 Bottoms - Men's
$120.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular, Big
SmartwoolClassic All-Season Merino 3/4 Base Layer Bottoms - Men's
$75.00
2 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Sale Ends Dec 8
New arrival
Icebreaker300 MerinoFine Polar Thermal Base Layer Leggings - Men's
$149.99
Save 25%
compared to $200.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
Sale Ends Dec 8
IcebreakerMerino 200 Oasis High-Rise Base Layer Leggings - Women's
$86.19
Save 25%
compared to $115.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
Arc'teryxRho Merino Wool Base Layer Bottoms - Men's
$120.00
4 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
SmartwoolIntraknit Active Base Layer Bottoms - Men's
$81.73
Save 25%
compared to $110.00
2 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Big, Regular
REI OUTLET

1–30 of 94 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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