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Wool Underwear

(266 products)

Products (266)

Sort: Best Match

IcebreakerMerino 260 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$185.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
IcebreakerFastray II 20" High-Rise 3/4 Base Layer Tights - Women's
$82.73
Save 24%
compared to $110.00
6 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Arms of Andes300 Lightweight Alpaca Wool Pullover Base Layer Hoodie - Women's
$140.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Icebreaker300 MerinoFine Polar Long-Sleeve Half-Zip Thermal Base Layer Top - Men's
$250.00
6 reviews with an average rating of 4.2 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Kari TraaSilja 2.0 Base Layer Pants - Women's
$110.00
3 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
SmartwoolIntraknit Strappy Bra
$44.73
Save 31%
compared to $65.00
4 reviews with an average rating of 4.0 out of 5 stars
Bra Support:
Low Impact
Support Style:
Compression
Fabric:
65% nylon/24% elastane/11% polyester (exclusive of decoration)
REI OUTLET
Top Rated
Icebreaker260 Tech Thermal Base Layer Leggings - Kids'
$70.00
10 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
SmartwoolThermal Merino Rib Turtleneck Base Layer Top - Women's
$130.00
10 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Arc'teryxRho Merino Wool Base Layer Bottoms - Men's
$120.00
5 reviews with an average rating of 3.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Big
SmartwoolClassic Thermal Merino Mock Neck Base Layer Top - Women's
$140.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular
StioBasis PeakWool Midweight Base Layer Tights - Men's
$149.00
3 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
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
Ortovox230 Competition Short Base Layer Pants - Men's
$90.00
0 reviews
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolIntraknit Thermal Merino Base Layer 3/4 Bottoms - Men's
$120.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
Ortovox185 Rock'N'Wool Short Base Layer Pants - Men's
$100.00 - $110.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular, Big
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
StioBasisPeak Wool Midweight Half-Zip Base Layer Top - Women's
$149.00
3 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
StioBasisPeak Wool Midweight Base Layer Tights - Women's
$149.00
5 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Kari TraaAlma Hood Base Layer Top - Women's
$59.73
Save 25%
compared to $80.00
0 reviews
Underwear Weight:
Ultralightweight
Size Type:
Regular
REI OUTLET
Top Rated
Kari TraaElse Half-Zip Base Layer Top - Women's
$76.73
Save 30%
compared to $110.00
30 reviews with an average rating of 4.7 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$103.73
Save 35%
compared to $160.00
4 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
IcebreakerMerino 260 ZoneKnit Long-Sleeve Crew Base Layer Top- Men's
$175.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
Ortovox185 Rock'N'Wool Long-Sleeve Base Layer Top - Men's
$120.00 - $130.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular, Big
Icebreaker260 Tech Vertex High-Rise Thermal Base Layer Leggings - Women's
$150.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
Top Rated
Icebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men's
$93.73
Save 25%
compared to $125.00
7 reviews with an average rating of 4.9 out of 5 stars
Underwear Weight:
Ultralightweight
Size Type:
Regular
REI OUTLET
SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Men's
$130.00
2 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
SmartwoolClassic Thermal Merino Half-Zip Base Layer Hoodie - Women's
$145.00
1 reviews with an average rating of 5.0 out of 5 stars
Size Type:
Regular
SmartwoolClassic Thermal Merino Base Layer Crew One-Piece - Men's
$250.00
1 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
SmartwoolClassic All-Season Merino Base Layer Long-Sleeve Shirt - Women's
$66.73
Save 25%
compared to $90.00
84 reviews with an average rating of 4.3 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
Kari TraaFaith Half-Zip Base Layer Top - Women's
$86.73
Save 27%
compared to $120.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET

181–210 of 266 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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