Base Layers and Underwear

Category

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

Brand

Icebreaker
Minus33
Beyond Clothing
Airblaster
ExOfficio
Outdoor Research
Ridge Merino
U.S. Armed Forces
MyPakage
Sherpa Adventure Gear

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

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

Minus33 Acadian Lightweight Boxer Brief

rated 5 of 5 stars Worn for seven days straight on a canoe trip in Northern Maine during variable weather in august!!! Amazing!!! We outdoor industry dedicatees remember the Ex Officio campaign claiming that their underwear could take you around the world and beyond. That their undies are so great that with a simple weekly sink washing whenever you happen into a hostel your drawers will smell of roses and no crotch rot will ever inhibit your adventuring. As is my way, I put them to the test.  They were good, I’ll… Full review

Beyond Clothing Aether Crew

rated 5 of 5 stars A great short sleeve base layer shirt that can be used on its own for hiking or under other items if the weather is colder. The shirt is super soft and extremely comfortable with ridges that help wick the sweat away from your body and keep you cool even during strenuous exercise. I would definitely recommend it for anyone who will be doing heavy outdoor activity and wants something lightweight and breathable. I got the Aether Crew base layer shirt as a reviewer and got to test it out on a recent… Full review

Airblaster Men's Ninja Suit

rated 4.5 of 5 stars Looking for a "onesie?" The Airblaster Ninja One-Piece Suit offers all I need for a full coverage, draft free, mid-weight base layer...without the bulk! As is often the case for me (being on a fixed income) I enter review contests to win gear that I need (but can't afford) for my passionate pursuits. Winning another site's campground review contest, I garnered a coveted gift certificate to Airblaster (myairblaster.com). I must admit, the gift certificate was substantial and I was no less grateful...but… Full review

ExOfficio Sol Cool Boxer Brief

rated 4 of 5 stars Jade infused fabric pulls moisture from your body for a cool sensation. Slim fit does not bunch up. I was sent a pair of ExOfficio Sol Cool boxer briefs in late January for testing and review. I actually tried to wear them during the winter but found that they were just too cool for comfort at that time of the year. Once things started to warm up I gave them a thorough workout. Comprised of 52% Cotton, 42% Nylon, 6% Spandex, the nylon has been infused with Jade, yes, Jade the rock. Apparently,… Full review

Outdoor Research ActiveIce Sun Sleeves

rated 5 of 5 stars Out of all the clothes I’ve used for hiking this is by far the cleverest, well executed, and best functional garment I had. I hiked over 1,000 miles with those sleeves, and did it in blazing sun, high altitude high radiation, and hot conditions. I have very white sensitive skin, and I was appalled by the thought of carrying and applying sun screen for the whole trip. Fortunately I came across the ActiveIce Sun Sleeves that offered the ideal solution for sun protection. Pros: Blocks the sun! It… Full review

Ridge Merino Inversion Midweight Bottoms

rated 4.5 of 5 stars These high quality, high performance mid-weight base layer bottoms perform without adding unnecessary bulk! Unrestrictive and warm, Ridge’s new base layer line is ideal for people who have an active outdoor lifestyle. Whether skiing, backpacking, or even doing outdoor chores, the merino wool Inversion will help regulate temperature regardless of the conditions! A winter afternoon walk with Otto SPECS 18.5 micron merino wool 190g weight UPF 50+ 100% recycled polyester waistband Flatlocked seams… Full review

Avalanche Wear Women's Mogul Fleece Legging

rated 5 of 5 stars Where I live temperatures can drop well below zero I have never even thought about wearing a second pair of pants. The inner fleece lining is super soft and wicks moisture away from your skin also blocks wind. Washes well without breaking down. I've had my pair for two years and they're still my go-to winter running pants. Stretch as well when running. I have the woman's version of these pants, but could not find them on the site and wanted to express how much I truly love these pants. Full review

Top-Rated Base Layers and Underwear

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

user rating: 3 of 5 (2)
Icebreaker Oasis Crewe S/S reviewed Sep 7, 2017
$60
user rating: 5 of 5 (1)
Minus33 Acadian Lightweight Boxer Brief reviewed Aug 11, 2017
$36
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
$110
user rating: 4 of 5 (1)
ExOfficio Sol Cool Boxer Brief reviewed Jun 8, 2017
$38 - $42
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)
U.S. Armed Forces 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
$17 - $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
$40
user rating: 3.5 of 5 (2)
ExOfficio Give-N-Go Boxer reviewed Jul 21, 2016
$17 - $29
user rating: 5 of 5 (1)
Voormi Thermal ll Baselayer Top reviewed Jul 20, 2016
$129
user rating: 4.5 of 5 (1)
Patagonia Capilene Lightweight Bottoms reviewed Jul 10, 2016
$32 - $49
user rating: 5 of 5 (2)
Icebreaker Everyday Long Sleeve Crewe reviewed Feb 25, 2016
$60 - $70
user rating: 4 of 5 (1)
Patagonia Capilene 1 Silkweight T-Shirt reviewed Jan 3, 2016
user rating: 5 of 5 (7)
ExOfficio Give-N-Go Boxer Brief reviewed Jan 2, 2016
$17 - $29
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
user rating: 5 of 5 (2)
Stoic Merino 200 Boxer Brief reviewed Nov 16, 2015
discontinued
user rating: 5 of 5 (1)
Patagonia Merino Air Bottoms reviewed Nov 9, 2015
user rating: 4 of 5 (3)
Avalanche Wear Mogul Pant reviewed Oct 7, 2015
$50 MSRP
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 - $25
user rating: 5 of 5 (1)
Patagonia Merino 3 Midweight Hoody reviewed May 21, 2015
$125 MSRP
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)
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
user rating: 5 of 5 (1)
Smartwool Midweight Crew reviewed Jan 22, 2014
$47 - $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 of 5 (1)
Patagonia Merino 2 Lightweight T-Shirt reviewed Oct 28, 2013
$65 MSRP
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
$30 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
user rating: 5 of 5 (1)
Terramar Hot Totties Grid Fleece Tights reviewed Feb 9, 2013
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