Base Layers and Underwear

Categories

Tops
Bottoms
One-Piece Base Layers
Boxers, Briefs, Bikinis
Sports Bras
Arm and Leg Sleeves

Brands

ExOfficio
New Balance
Stoic
Patagonia
Avalanche Wear
Icebreaker
Outdoor Research
Mountain Equipment
Woolx
Smartwool

Genders

Unisex
Men's
Women's
Kids'
Boys'
Girls'

Price

less than $25
$25 - $49.99
$50 - $99.99
$100 - $199.99
$200 and above

Recent Base Layer Reviews

Icebreaker Men's Everyday Long Sleeve Crewe

rated 5 of 5 stars A superb, comfortable baselayer for cool weather activities. I started wearing Merino baselayers back in 2003, when they first seemed to be hitting the market. In those days, it was Smartwool, and not much else. Most of the tops I purchased those many years ago, are now in tatters, so it was time to replace. Having had good recent success with Icebreaker, I found this shirt on sale, and took the bait. I have found Icebreaker's fit to be slightly on the small side, so even though I usually wear XL… Full review

Patagonia Men's Capilene 1 Silkweight T-Shirt

rated 4 of 5 stars Good, solid base layer. This is a solid T-shirt. The material has a slight sheen to it, is a bit stretchy and very comfortable. It wicks and dries very quickly. I bought mine in black about 6 months ago. It's been washed about 10 times and the seams and stitching still look great. I hike in just this shirt during the day and haven't had any problems with snares from gear or branches, so I'd say it's durable. It still smells fine, and I think whatever odor guard Patagonia is using works well. It's… Full review

ExOfficio Give-N-Go Boxer Brief

rated 5 of 5 stars Fastest drying underwear that I have ever had. Makes for the perfect travel and camping underwear. When I first bought a pair, I thought that they were very pricey. Now on my sixth pair and I feel that they are well worth the money. I have hand-washed these boxer briefs in streams, sinks and in the shower. If I wash them in the morning and hang dry, they are dry by the afternoon/evening. Two pair, is all you need for your adventures. Full review

Patagonia Men's Capilene 2 Lightweight Zip-Neck

rated 5 of 5 stars Easy care material that can be washed in a sink as well as in a washing machine. Lightweight and durable. My most durable layering piece. I have tried many other alternatives for active heat retention base layers, and always come back to this piece. Deals well with odor, the rubbing of straps through clothing, and drys quickly. Freedom of movement is incorporated in the design. Capilene has worked very well for me. Try a garment on your next adventure.  Full review

Ibex Men's Woolies 2 Bottom

rated 5 of 5 stars My butt always froze on a wet ski lift—until these. These rock—no problems after 9 years. Very comfortable and never overheating thanks to the way merino regulates temperature. Wool keeps you warm even when wet. Never gotten moist from sweat, wicks well. Still looks new, quality durable construction. Full review

New Balance Performance Underwear 9 Inch Inseam Boxer Brief

rated 5 of 5 stars Long inseam briefs have made a huge difference for me in stopping inner leg chaffing, in rough terrain requiring leg lifting and plunging over obstacles. Half (or less) the cost of equivalent Under Armour and ExOfficio options, and highly durable, these have become my standard "go-to" gear. Ever have a hike, with unexpectedly rough terrain that resulted in chaffing in the upper, inner thigh area? Unfortunately I have experienced this once to the degree that bandages were needed for a week afterwards. Full review

Patagonia Men's Capilene 1 Silkweight Crew

rated 4 of 5 stars Comfortable and light with powerful wicking properties, this shirt works well as a base layer and even better as a standalone cooling shirt. Great for those who need to stay dry in cold weather and those who would enjoy the evaporative cooling effect when hot. Fit & Comfort Made from a soft and resiliently stretchy 94% polyester and 6% spandex, the Capilene 1 material feels great against the skin, which is important for a base layer. The sized large I purchased was listed as being a "slim fit"… Full review

Stoic Merino 200 Boxer Brief

rated 5 of 5 stars Merino wool, good fit. I purchased the large size first (I'm 36" waist) and liked them, but subsequent purchases at medium did well too. Will continue to buy as needed. Live in the mountains, great start to everyday dressing. Full review

Patagonia Men's Merino Air Bottoms

rated 5 of 5 stars The Patagonia Merino Air Bottoms exceeded my expectations. Game changing merino-synthetic fabric with no seams and effortless stretch. Material that breathes, holds heat, and moves water away from your skin as you heat up. Patagonia is one of the companies that other brands hate and simultaneously wish they could be.  The Merino Air Bottoms are made from recycled polyester and merino wool (the stuff men's suits are made of) grown in Patagonia.  I used to think that no single baselayer material… Full review

Top-Rated Base Layers and Underwear

Sort by: name | rating | price | availability | recently reviewed

user rating: 5 of 5 (7)
ExOfficio Give-N-Go Boxer Brief reviewed Jan 2, 2016
$17 - $26
user rating: 5 of 5 (1)
New Balance Performance Underwear 9 Inch Inseam Boxer Brief reviewed Nov 29, 2015
user rating: 5 of 5 (2)
Stoic Merino 200 Boxer Brief reviewed Nov 16, 2015
$41
user rating: 5 of 5 (1)
Patagonia Merino Air Bottoms reviewed Nov 9, 2015
$129
user rating: 4 of 5 (3)
Avalanche Wear Mogul Pant reviewed Oct 7, 2015
$25 - $27
user rating: 5 of 5 (1)
Patagonia Merino Air Hoody reviewed Sep 30, 2015
$149
user rating: 4.5 of 5 (1)
Icebreaker Bodyfit 260 Olympia Crewe reviewed Sep 24, 2015
discontinued
user rating: 4.5 of 5 (1)
ExOfficio Give-N-Go Sport Mesh Brief reviewed Sep 20, 2015
$26
user rating: 3.5 of 5 (1)
Outdoor Research ActiveIce Sun Sleeves reviewed Jul 22, 2015
$29
user rating: 5 of 5 (1)
Mountain Equipment Crux LS Crew reviewed Mar 3, 2015
user rating: 4 of 5 (1)
Woolx X704 reviewed Mar 2, 2015
$170 MSRP
user rating: 5 of 5 (1)
Smartwool Midweight Turtleneck reviewed Sep 29, 2014
$54
user rating: 5 of 5 (1)
Smartwool NTS Mid 250 Bottom reviewed Sep 29, 2014
$95 - $99
user rating: 5 of 5 (1)
First Lite Chama Hoody reviewed Jun 5, 2014
user rating: 5 of 5 (1)
Adidas Sport Performance Flex 360 Boxer Brief reviewed Apr 22, 2014
user rating: 4 of 5 (1)
Under Armour Original Series 9-inch Boxerjock reviewed Mar 11, 2014
$20
user rating: 4.5 of 5 (3)
Smartwool Microweight Crew reviewed Feb 2, 2014
$44 - $79
user rating: 2.5 of 5 (1)
Wild Country Lightweight Base Layer Top reviewed Jan 1, 2014
user rating: 5 of 5 (3)
Icebreaker Bodyfit 150 Long Sleeve Crewe reviewed Dec 21, 2013
user rating: 5 of 5 (1)
Icebreaker Oasis Long Sleeve Crewe reviewed Oct 19, 2013
$45 - $100
user rating: 4.5 of 5 (1)
Verve Cassandra Bra reviewed Oct 9, 2013
$38 MSRP
user rating: 4 of 5 (1)
RedRam Merino Legging reviewed Oct 5, 2013
user rating: 5 of 5 (1)
Ibex Swerve Long Sleeve Top reviewed Oct 2, 2013
discontinued
user rating: 5 of 5 (2)
Smartwool Midweight Zip T reviewed Oct 1, 2013
$39 - $109
user rating: 4.5 of 5 (4)
Icebreaker 260 Midweight LS Crewe reviewed Aug 8, 2013
$100 MSRP
user rating: 5 of 5 (1)
Champion C9 Premium Boxer Briefs reviewed May 16, 2013
user rating: 3 of 5 (1)
Terramar SmartSilk Crew reviewed Mar 7, 2013
$60 MSRP
user rating: 4.5 of 5 (1)
Icebreaker GT 200 L/S Chase Zip reviewed Feb 13, 2013
discontinued
user rating: 2.5 of 5 (1)
Terramar Hot Totties Fleece Heavy Footy Performance Leggings reviewed Feb 9, 2013
$11
user rating: 5 of 5 (1)
Terramar Hot Totties Grid Fleece Tights reviewed Feb 9, 2013
$20
user rating: 5 of 5 (2)
Under Armour ColdGear Fitted Legging reviewed Feb 6, 2013
$50 MSRP
user rating: 4 of 5 (1)
Terramar Thermolator II Pant reviewed Feb 6, 2013
$17 - $28
user rating: 4 of 5 (2)
Terramar SmartSilk Tights reviewed Mar 7, 2013
$60 MSRP
 
user rating: 5 of 5 (1)
Terramar EC2 Transport reviewed Jan 31, 2013
 
user rating: 5 of 5 (1)
Terramar TXO 3.0 Body-Sensors reviewed Jan 31, 2013
user rating: 4.5 of 5 (1)
Icebreaker Anatomica Brief reviewed Jan 20, 2013
$26 - $32
user rating: 5 of 5 (1)
Patagonia Capilene 3 Midweight Bottoms reviewed Jan 19, 2013
$24 - $59
user rating: 3 of 5 (1)
Gordini Silkweight Briefs reviewed Jan 18, 2013
discontinued
user rating: 4 of 5 (2)
Gordini Lavawool Midweight 1/4 Zip reviewed Jan 18, 2013
discontinued
user rating: 4 of 5 (1)
SportHill Northwind Unders reviewed Jan 16, 2013
$36 - $37
user rating: 3.5 of 5 (1)
Icebreaker Bodyfit 200 Oasis Crewe Scroll reviewed Jan 16, 2013
user rating: 5 of 5 (2)
Stoic Alpine Merino 150 Crew - Long-Sleeve reviewed Dec 29, 2013
$55
 
user rating: 5 of 5 (1)
RedRam Merino Boxer Briefs reviewed Dec 13, 2012
user rating: 4 of 5 (1)
Isis Henna Day reviewed Nov 15, 2012
$34 MSRP
user rating: 5 of 5 (1)
Patagonia Capilene 1 Silkweight Scoop reviewed Nov 1, 2012
$45 MSRP
user rating: 4 of 5 (1)
Stoic Breathe Composite Bottom reviewed Nov 1, 2012
$27 - $31
user rating: 4 of 5 (1)
ExOfficio Give-N-Go Lacy Full Cut Brief reviewed Oct 10, 2012
$13
user rating: 3 of 5 (1)
Isis Active Bra reviewed Oct 7, 2012
user rating: 5 of 5 (1)
Icebreaker Siren Bra reviewed Jul 29, 2012
$50
user rating: 5 of 5 (1)
Smartwool Midweight Hoody reviewed Jul 29, 2012
$110 MSRP
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