Base Layers and Underwear
page 2 of 4
↩ Overview & Top Picks
↩ Overview & Top Picks
Category
- Base Layer Tops (81)
- Base Layer Bottoms (31)
- Boxers, Briefs, Bikinis (20)
- Arm and Leg Sleeves (3)
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Ibex Woolies Tech Bottoms
Bottom
$81
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Smartwool Merino Boxer Brief
Boxer/Brief/Bikini
$34 -
$48
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Fjallraven Bergtagen Woolmesh Sweater
Top
$106 -
$111
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Voormi River Run Hoodie
Top
$129
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
ExOfficio Give-N-Go Boxer Brief
Boxer/Brief/Bikini
$17 -
$29
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Patagonia Capilene Air Bottoms
Bottom
$79 -
$97
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Outdoor Research Enigma Bottoms
Bottom
$48
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Smartwool Classic All-Season Merino Base Layer Bottom
Bottom
$68 -
$90
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Black Diamond Solution 150 Merino Base 3/4
Bottom
$100
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Black Diamond Solution 150 Merino Base Crew
Top
$135
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Kari Traa Rose Long Sleeve
Top
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Smartwool Merino 150 Pocket Tee
Top / Short Sleeve Performance
$64
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Patagonia Capilene Air Hoody
Top
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Kari Traa Rose Pant
Bottom
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Patagonia R1 Pants
Bottom / Fleece
$129
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Helly Hansen HH LIFA Stripe Crew
Top
$45
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Minus33 Acadian Lightweight Boxer Brief
Boxer/Brief/Bikini
$45
![user rating: 4 of 5 user rating: 4 of 5](/images/stars/140x26/4.png)
Patagonia Capilene Air Crew
Top
$90 -
$129
![user rating: 4 of 5 user rating: 4 of 5](/images/stars/140x26/4.png)
Outdoor Research ActiveIce Sun Sleeves
Arm/Leg Sleeve
$26 -
$35
![user rating: 4 of 5 user rating: 4 of 5](/images/stars/140x26/4.png)
Smartwool Intraknit Merino 250 Thermal 1/4 Zip
Top
$90 -
$115
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Icebreaker Anatomica Brief
Boxer/Brief/Bikini
$40
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Smartwool Merino Sport 150 Brief
Boxer/Brief/Bikini
$19 -
$25
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Patagonia Capilene 3 Midweight Bottoms
Bottom
$39 -
$89
![user rating: 4 of 5 user rating: 4 of 5](/images/stars/140x26/4.png)
Smartwool Lightweight Zip T
Top
$52
![user rating: 4 of 5 user rating: 4 of 5](/images/stars/140x26/4.png)
Outdoor Research Alpine Onset Crew
Top
$89
![user rating: 3 of 5 user rating: 3 of 5](/images/stars/140x26/3.png)
Patagonia Capilene Thermal Weight Zip-Neck
Top
$54 -
$109
![user rating: 3.5 of 5 user rating: 3.5 of 5](/images/stars/140x26/3.5.png)
Outdoor Research Alpine Onset Bottoms
Bottom
$89
![user rating: 3.5 of 5 user rating: 3.5 of 5](/images/stars/140x26/3.5.png)
ExOfficio Give-N-Go Boxer
Boxer/Brief/Bikini
$12 -
$29
![user rating: 4 of 5 user rating: 4 of 5](/images/stars/140x26/4.png)
SportHill Northwind Unders
Boxer/Brief/Bikini
$35
MSRP
ExOfficio Sol Cool Boxer Brief
Boxer/Brief/Bikini
$25
Coldpruf Platinum II Pant
Bottom
$40
![user rating: 3 of 5 user rating: 3 of 5](/images/stars/140x26/3.png)
Minus33 Isolation Midweight Merino Zip-Neck
Top
$100
Airblaster Ninja Suit
One-Piece Base Layer
$42 -
$105
Coldpruf Platinum II Crew
Top
$40
![user rating: 2 of 5 user rating: 2 of 5](/images/stars/140x26/2.png)
Terramar Silk Pant
Bottom
$40 -
$60
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Fjallraven Bergtagen Longjohns
Bottom
$140
MSRP
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Patagonia Merino Air Bottoms
Bottom
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Patagonia Merino Air Hoody
Top
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Ridge Merino Inversion Heavyweight Crew
Top
$90
MSRP
![user rating: 5 of 5 user rating: 5 of 5](/images/stars/140x26/5.png)
Patagonia Capilene 2 Lightweight Zip-Neck
Top
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Smartwool Microweight Tee
Top
$65
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Outdoor Research Enigma Boxer Briefs
Boxer/Brief/Bikini
$34
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Ridge Merino Inversion Midweight Bottoms
Bottom
$50
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Helly Hansen HH Lifa Merino Pant
Bottom
$90
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Outdoor Research Enigma Half Zip
Top
$79
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Appalachian Gear Company All-Paca Crew
Long Sleeve Performance Top / Top
$145
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
FORLOH Deep Space Half Zip Long Sleeve Top
Top
$129
MSRP
![user rating: 4.5 of 5 user rating: 4.5 of 5](/images/stars/140x26/4.5.png)
Smartwool Microweight Bottom
Bottom
$70
MSRP
Other Types of Clothing and Accessories
Find more clothing and accessories reviewed in these related categories:
![](/images/gear/2014/jackethard-300x300.jpg)
Jackets
![](/images/gear/2014/vest-300x300.jpg)
Vests
![](/images/gear/2014/shirt-300x300.jpg)
Shirts
![](/images/gear/2014/jackethard-300x300.jpg)