Base Layers and Underwear

Category

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

Brand

Woolx
ExOfficio
Avalanche Wear
Coldpruf
Icebreaker
Minus33
Beyond Clothing
Airblaster
Outdoor Research
Ridge Merino

User

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

Price

less than $25
$25 - $49.99
$50 - $99.99
$100 - $199.99
$200 - $299.99
$300 - $399.99
$400 - $499.99
$500 and above

Recent Base Layer Reviews

Woolx Everyday Long Sleeve Crew 230 Midweight

rated 5 of 5 stars The WoolX men's Everyday Long Sleeve Crew, 230 Midweight Top (X506-302) has become, without any doubt, my favorite base layer top. I wear it frequently, pretty much year round, as a stand-alone layer, or beneath other layers and outerwear. It is incredibly comfortable, has great warmth and wicking capability, and has held up well for over a year of use and washings. Definitely recommend investing in this top!                                                    … Full review

Craft Men's Active Extreme 2.0 CN LS Top

rated 4.5 of 5 stars An awesome baselayer from Craft. The Active Extreme 2.0 CN LS is NOT a thermal baselayer even though according to the company's graph it's best suited for elite athletes doing high intensity activities in temps hovering at -10° Celsius... ...ooorr just any other regular dude that sweats doing some very light backpacking @16-17° Celsius and 77% humidity in Crete (lol).It feels warm when in sunlight due to the black color, but when in shade the temp drops instantly! I mean this thing really cools… Full review

ExOfficio Give-N-Go Boxer Brief

rated 5 of 5 stars 6-star underwear! Would give six stars if I could. Have owned two pairs for about five years now. Initially purchased for treks to avoid the dreaded chafing. They are now used for any athletic venture. Quality: Two pair that have lasted five years, that alone is impressive. Material is kind on the skin, stretches well, but stays on the body.   Comfort: Have worn on 15-mile hikes, lots of sweating and ZERO chafing. They wick moisture amazingly and keep their form after a long day. Breathable: No… Full review

Avalanche Wear Mogul Pant

rated 1 of 5 stars These used to be my go-to pants. They were fantastic until they changed the fabric years ago and made them in China. I just bought these pants after years of refusing to buy them for years because of the terrible pilling and their latest product is worse than ever. They pilled immediately. I bought Athletica Polartec at the same time and there is no pilling. I am so disappointed because 15 years ago when they were made in Canada they were fantastic. Why don't companies listen to their consumer reviews? Full review

Coldpruf Platinum II Pant

rated 5 of 5 stars ColdPruf has better quality materials (not cotton) than the old stuff I have, and the fit is much better. There are excellent sizing charts and sizes for tall people, like myself. The fit is great. I could comfortably play sports or other activities in the Platinum II without any range of motion restrictions. It is tight enough fitting for a base layer (the modern name for long underwear), but not too tight. Recommend for active people in cold weather. As a member of another website, I get products… Full review

Coldpruf Platinum II Crew

rated 5 of 5 stars ColdPruf has better quality materials (not cotton) than the old stuff I have, and the fit is much better. There are excellent sizing charts and sizes for tall people, like myself. The fit is great. I could comfortably play sports or other activities in the Platinum II without any range of motion restrictions. It is tight enough fitting for a base layer (the modern name for long underwear), but not too tight. Recommended for active people in cold climates. As a member of another website, I get products… Full review

ExOfficio Give-N-Go Boxer Brief

rated 1 of 5 stars The fabric makes the genitals sweat and smell. The fabric seems okay, but the genitals sweat and now smell.  Full review

Icebreaker Oasis Crewe S/S

rated 0.5 of 5 stars Very expensive crap. I am in New Zealand where Icebreaker comes from and this brand has gone downhill in the last year or so. The quality is not what it used to be and is mostly no longer 100% pure Merino wool as their general advertising would have us believe, instead having other artificial fiber incorporated into the yarn I am informed. At the beginning of winter I bought three Icebreaker items. A scarf, a sweater, and a base layer. The first two were returned to the retailer as they were not… Full review

Icebreaker Oasis Crewe S/S

rated 5 of 5 stars This 100% merino wool t shirt is great for most outdoor pursuits and workouts. 200 weight merino is a bit heavier weight than the "ultralight" wool t's and has benefits, namely more warmth and durability. The ability to wear while damp, wick moisture, and stay warm is wonderful. Smooth finish is not itchy. This is really a tale of two t-shirts. In 2010, I purchased Icebreaker's Hopper Lite t shirt and still wear it today. That model was later discontinued. A couple of years ago, I searched for and… Full review

Top-Rated Base Layers and Underwear

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

user rating: 5 of 5 (1)
Woolx Everyday Long Sleeve Crew 230 Midweight reviewed Dec 1, 2017
$74 MSRP
user rating: 4.5 of 5 (9)
ExOfficio Give-N-Go Boxer Brief reviewed Nov 22, 2017
$17 - $29
user rating: 3 of 5 (4)
Avalanche Wear Mogul Pant reviewed Nov 9, 2017
$50 MSRP
user rating: 5 of 5 (1)
Coldpruf Platinum II Pant reviewed Sep 29, 2017
$33 MSRP
user rating: 5 of 5 (1)
Coldpruf Platinum II Crew reviewed Sep 29, 2017
$33 MSRP
user rating: 3 of 5 (2)
Icebreaker Oasis Crewe S/S reviewed Sep 7, 2017
$38 - $59
user rating: 5 of 5 (1)
Minus33 Acadian Lightweight Boxer Brief reviewed Aug 11, 2017
$27 - $34
user rating: 5 of 5 (1)
Beyond Clothing Aether Crew reviewed Aug 8, 2017
$75 MSRP
user rating: 4.5 of 5 (1)
Airblaster Ninja Suit reviewed Jul 7, 2017
$60 - $119
user rating: 4 of 5 (1)
ExOfficio Sol Cool Boxer Brief reviewed Jun 8, 2017
$26 - $37
user rating: 4 of 5 (2)
Outdoor Research ActiveIce Sun Sleeves reviewed Mar 4, 2017
$29
user rating: 4.5 of 5 (1)
Ridge Merino Inversion Midweight Bottoms reviewed Feb 9, 2017
$50 MSRP
user rating: 5 of 5 (1)
Avalanche Wear Mogul Fleece Legging reviewed Jan 9, 2017
$50 MSRP
user rating: 5 of 5 (1)
U.S. Military Gen III, Level 2 ECWCS Top reviewed Jan 3, 2017
user rating: 5 of 5 (1)
MyPakage Pro Series 2-in-1 reviewed Dec 12, 2016
$90 MSRP
user rating: 4.5 of 5 (1)
Sherpa Adventure Gear Baans Tech Quarter Zip reviewed Oct 13, 2016
user rating: 5 of 5 (1)
Kora Shola 230 Crew reviewed Sep 26, 2016
$145 MSRP
user rating: 5 of 5 (1)
Terramar Mesh Pro Boxer Brief 6" reviewed Sep 7, 2016
$18 MSRP
user rating: 5 of 5 (1)
ExOfficio Give-N-Go Lacy Bikini reviewed Sep 2, 2016
$12 - $23
user rating: 4.5 of 5 (1)
Kora Shola 230 Zip reviewed Aug 4, 2016
$160 MSRP
user rating: 4.5 of 5 (2)
MyPakage Action Series Boxer Brief reviewed Jul 29, 2016
$35
user rating: 3.5 of 5 (2)
ExOfficio Give-N-Go Boxer reviewed Jul 21, 2016
$14 - $29
user rating: 5 of 5 (1)
Ibex Woolies 2 Bottom reviewed Dec 3, 2015
user rating: 5 of 5 (1)
New Balance Performance Underwear 9 Inch Inseam Boxer Brief reviewed Nov 29, 2015
user rating: 4 of 5 (1)
Patagonia Capilene 1 Silkweight Crew reviewed Nov 19, 2015
$16 - $39
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
user rating: 5 of 5 (1)
Patagonia Merino Air Hoody reviewed Sep 30, 2015
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
$18 - $26
user rating: 5 of 5 (1)
Patagonia Merino 3 Midweight Hoody reviewed May 21, 2015
$56 - $70
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
$85 MSRP
user rating: 5 of 5 (1)
Smartwool NTS Mid 250 Bottom reviewed Sep 29, 2014
$66 - $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
user rating: 4.5 of 5 (3)
Smartwool Microweight Crew reviewed Feb 2, 2014
$44 - $62
user rating: 5 of 5 (1)
Smartwool Midweight Crew reviewed Jan 22, 2014
$57 - $95
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: 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: 4.5 of 5 (1)
Mountain Hardwear WayCool Arms reviewed Jun 20, 2013
$28
user rating: 5 of 5 (1)
Champion C9 Premium Boxer Briefs reviewed May 16, 2013
user rating: 5 of 5 (2)
Patagonia Merino 2 Lightweight Crew reviewed Apr 25, 2013
$90
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
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