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Icebreaker Merino Wool Base Layer Tops

(45 products)

Products (45)

Sort: Best Match

Top Rated
IcebreakerMerino 200 Sonebula Long-Sleeve Crewe Base Layer Top - Men's
$89.73
Save 25%
compared to $120.00
6 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular, Big
REI OUTLET
New arrival
IcebreakerMerino 260 Vertex Long-Sleeve Crewe Thermal Base Layer Top - Women's
$99.73
Save 28%
compared to $140.00
5 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
REI OUTLET
New arrival
IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Thermal Base Layer Top - Kids'
$52.73
Save 29%
compared to $75.00
4 reviews with an average rating of 4.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
New arrival
IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$99.73
Save 26%
compared to $135.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
New arrival
Icebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Women's
$93.73
Save 25%
compared to $125.00
4 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
Top Rated
Icebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men's
$93.73
Save 25%
compared to $125.00
6 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Ultralightweight
Size Type:
Regular, Big
REI OUTLET
New arrival
Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Men's
$86.73
Save 24%
compared to $115.00
3 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular, Big
REI OUTLET
New arrival
IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$119.73
Save 25%
compared to $160.00
2 reviews with an average rating of 3.5 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
REI OUTLET
New arrival
Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Women's
$86.73
Save 24%
compared to $115.00
0 reviews
Underwear Weight:
Lightweight
Size Type:
Regular
REI OUTLET
New arrival
IcebreakerMerino 260 Tech Long Sleeve Crewe Base Layer Top - Men's
$119.73
Save 27%
compared to $165.00
0 reviews
Underwear Weight:
Heavyweight
Size Type:
Regular, Big
REI OUTLET
Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Cloud Dye Base Layer Top - Women's
$56.83
Save 50%
compared to $115.00
13 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
IcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's
$74.83
Save 50%
compared to $150.00
10 reviews with an average rating of 4.0 out of 5 stars
Underwear Weight:
Heavyweight
Size Type:
Regular
Icebreaker200 ZoneKnit Long-Sleeve Crewe Base Layer Top - Women's
$74.83
Save 50%
compared to $150.00
3 reviews with an average rating of 5.0 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular
Icebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Top - Women's
$61.83
Save 50%
compared to $125.00
4 reviews with an average rating of 4.8 out of 5 stars
Underwear Weight:
Lightweight
Size Type:
Regular
IcebreakerMerino 200 Oasis Long-Sleeve Base Layer Crew Top - Kids'
$41.93
Save 30%
compared to $60.00
7 reviews with an average rating of 4.4 out of 5 stars
Underwear Weight:
Midweight
Size Type:
Regular

31–45 of 45 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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