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Baselayers

(355 products)

Products (355)

Sort: Best Match

REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
$49.83 - $99.95
21 reviews with an average rating of 4.3 out of 5 stars
Kari TraaRose High-Waisted Base Layer Pants - Women's
$110.00
24 reviews with an average rating of 4.4 out of 5 stars
PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's
$99.00
14 reviews with an average rating of 3.6 out of 5 stars
Top Rated
REI Co-opMidweight Crew Base Layer Top - Toddlers'
$24.95
14 reviews with an average rating of 4.7 out of 5 stars
Arms of Andes160 Ultralight Alpaca Wool Crew Neck Base Layer T-Shirt - Women's
$75.00
2 reviews with an average rating of 5.0 out of 5 stars
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
Ortovox120 Comp Light Short Base Layer Pants - Men's
$70.00
3 reviews with an average rating of 5.0 out of 5 stars
Top Rated
IcebreakerMerino 150 Tech Lite III Relaxed T-Shirt - Women's
$80.00
69 reviews with an average rating of 4.6 out of 5 stars
REI Co-opMerino 185 Base Layer Top - Men's
$69.95
51 reviews with an average rating of 4.2 out of 5 stars
Top Rated
The North FaceSummit Series Pro 120 Crew Base Layer Top - Women's
$100.00
12 reviews with an average rating of 5.0 out of 5 stars
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
Top Rated
tasc PerformanceElevation Merino T-Shirt - Women's
$49.73 - $54.73
Save 30% - 37%
compared to $79.00
75 reviews with an average rating of 4.6 out of 5 stars
REI OUTLET
Icebreaker125 Cool-Lite Merino Blend Sphere III Scoop T-Shirt - Women's
$75.00
17 reviews with an average rating of 4.2 out of 5 stars
BurtonMidweight X Base Layer Bottoms - Men's
$74.95
0 reviews
New arrival
Arc'teryxRho Base Layer Hoody - Women's
$96.73
Save 19%
compared to $120.00
0 reviews
REI OUTLET
Ortovox120 Comp Light Base Layer Hoody - Men's
$120.00
2 reviews with an average rating of 5.0 out of 5 stars
SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
$86.73
Save 24%
compared to $115.00
246 reviews with an average rating of 4.4 out of 5 stars
REI OUTLET
Helly HansenHH Durawool Graphic T-Shirt - Women's
$90.00
0 reviews
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
SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's
$90.00
95 reviews with an average rating of 4.2 out of 5 stars
New arrival
Arc'teryxRho Base Layer Bottoms - Women's
$79.73
Save 20%
compared to $100.00
0 reviews
REI OUTLET
New arrival
Arc'teryxRho Insulated 3/4 Base Layer Bottoms - Men's
$159.73
Save 20%
compared to $200.00
0 reviews
REI OUTLET
New arrival
Arc'teryxRho LT Base Layer Bottoms - Men's
$79.73
Save 20%
compared to $100.00
0 reviews
REI OUTLET
New arrival
SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Women's
$89.73
Save 25%
compared to $120.00
0 reviews
REI OUTLET
Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$86.73
Save 24%
compared to $115.00
365 reviews with an average rating of 4.7 out of 5 stars
REI OUTLET
Top Rated
Arc'teryxRho Heavyweight Base Layer Bottoms - Men's
$96.73
Save 19%
compared to $120.00
47 reviews with an average rating of 4.6 out of 5 stars
REI OUTLET
New arrival
SmartwoolIntraknit Thermal Max Merino Base Layer Bottoms - Women's
$101.73
Save 24%
compared to $135.00
0 reviews
REI OUTLET
tasc PerformanceElevation Merino Base Layer Bottoms - Women's
$49.73 - $54.73
Save 30% - 37%
compared to $79.00
52 reviews with an average rating of 4.2 out of 5 stars
REI OUTLET
Ortovox230 Competition Long Base Layer Pants - Men's
$100.00
1 reviews with an average rating of 4.0 out of 5 stars
Ortovox185 Rock'n'wool Long Base Layer Pants - Men's
$110.00
4 reviews with an average rating of 3.5 out of 5 stars

121–150 of 355 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