Base Layers and Underwear

Category

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

Brands

ExOfficio
Patagonia
Icebreaker
Arc'teryx
Marmot
Smartwool
MyPakage
Ibex
Voormi
Coldpruf

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 and above

Recent Base Layer Reviews

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

U.S. Armed Forces Gen III, Level 2 ECWCS Top

rated 5 of 5 stars U.S. made Polartec Power Grid fleece top for $20. Compare to the $100 Patagonia R1 which is now made overseas. I find myself wearing the level 2 grid fleece top (aka waffle top) more than any other garment when playing outdoors. Here's why: Ultra breathable Great wicking properties Warm, even as an outer layer Versatile: can be used effectively as a base, mid, or outer layer Thumb holes to facilitate the donning of other layers Half zip for venting Even if I do sweat while wearing this, the impressive… Full review

MyPakage Pro Series 2-in-1

rated 5 of 5 stars Pro series long underwear and athletic shorts in one package. The unique MyPakage 3 dimensional pouch protects your precious parts. Unless you have worn MyPakage underwear, you are really missing a great experience. Utilizing their 3-dimensional keyhole technology pouch that surrounds your package, they give you the best feeling underwear on the planet. There is no more adjusting your package because the pouch keeps everything nicely tucked away and not in constant contact with your legs. Forget… Full review

Terramar Men's Silk Pant

rated 2 of 5 stars Great pajamas, poor base layer. Thermasilk base layer from Terramar is not adequate for outdoor sports or any type of physical activity: It is far too weak and fragile. It is too thin to provide any warmth, and when wet, they feel cold. They will rip and shred if worn in an endurance sports or hard work setting. Also, they do not hold their shape. Hand-washing brings back their original shape, but they become limp after a couple of days out in the field. On the other hand, they make the best pajamas,… Full review

Sherpa Adventure Gear Men's Baans Tech Quarter Zip

rated 4.5 of 5 stars Used this for basecamp warmth after hiking 7 to 9 hours in the fall Maine weather. After hiking all day relied on this to stay warm while setting up campsite and in the cool fall Maine mornings to stay warm while breaking down. Keeps you extremely warm and comfortable during these critical times. This pullover fits great and is extremely comfortable after a long day of hard hiking. Provides essential warmth in the cool fall Maine weather after a great day's hiking, or in the early cold fall mornings. Full review

Kora Shola 230 Crew

rated 5 of 5 stars Warm, soft, well-fitting, comfortable even in warmer temperatures. It's been years since I've lived in a climate cold enough for a base layer. Actually it's been 13 years... I remember them as itchy, uncomfortable, and most of the time I would rather freeze than wear them. I definitely have needed them since returning, and I decided to bite the bullet and pick up a set for the upcoming winter, which the Farmer's Almanac says will be one of the coldest winters in some time. I typically would not… Full review

Patagonia Men's Capilene 2 Lightweight Zip-Neck

rated 4.5 of 5 stars Super lightweight at 6.5 oz. Very quick dry. Super open breathability without giving up warmth. Great light, breathable, super quick dry base layer. Fits snug to body, but doesn't stick. Allows for easy layering without that cramped tight feeling. Don't leave home without it!!!! Full review

Terramar Mesh Pro Boxer Brief 6"

rated 5 of 5 stars Unbelievable! Great value and extremely comfortable! These Terramar High Performance Boxer Briefs were a lifesaver. Not only did they fit great, they were easy to wash, dried out fast, and provided plenty of support on those long day hikes. Did I mention they are less expensive than most of the other odor-eliminating briefs I came across as well? If you are looking for new briefs give these a shot. You will not be disappointed. 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 Boxers, Briefs, Bikini
$13 - $30
user rating: 5 of 5 (6)
Patagonia Capilene 2 Lightweight Zip-Neck Base Layer Top
$30 - $55
user rating: 5 of 5 (2)
Icebreaker Oasis Long Sleeve Crewe Base Layer Top
$41 - $100
user rating: 5 of 5 (2)
Arc'teryx Rho LT Zip Neck Base Layer Top
$87 - $125
user rating: 5 of 5 (2)
Marmot Midweight Bottom Base Layer Bottom
$25
user rating: 5 of 5 (2)
Patagonia Merino 2 Lightweight Crew Base Layer Top
$48 - $90
user rating: 5 of 5 (2)
Patagonia Capilene 4 Expedition Weight Zip-Neck Base Layer Top
$45 - $99
user rating: 5 of 5 (2)
Patagonia R1 Pants Base Layer Bottom
$99 - $119
user rating: 5 of 5 (2)
Smartwool Midweight Zip T Base Layer Top
$65 - $110
user rating: 5 of 5 (2)
Icebreaker Everyday Long Sleeve Crewe Base Layer Top
$49 - $70
user rating: 4.5 of 5 (3)
Smartwool Microweight Crew Base Layer Top
$49 - $75
user rating: 4.5 of 5 (3)
Smartwool Microweight Tee Base Layer Top
$49 - $74
user rating: 4.5 of 5 (2)
MyPakage Action Series Boxer Brief Boxers, Briefs, Bikini
$40
user rating: 5 of 5 (1)
Patagonia Capilene 2 Lightweight Crew Base Layer Top
$34 - $49
user rating: 5 of 5 (1)
Ibex Balance Briefs Boxers, Briefs, Bikini
$21
user rating: 5 of 5 (1)
Voormi Thermal ll Baselayer Top Base Layer Top
$129
user rating: 5 of 5 (1)
Smartwool Midweight Crew Base Layer Top
$55 - $105
user rating: 5 of 5 (1)
Coldpruf Platinum Pants Base Layer Bottom
$20
 
user rating: 5 of 5 (1)
Patagonia Merino Air Bottoms Base Layer Bottom
$77
user rating: 5 of 5 (1)
Ibex Woolies 2 Bottom Base Layer Bottom
$52 - $95
user rating: 5 of 5 (1)
Helly Hansen Fly Pant Base Layer Bottom
$18 - $40
user rating: 5 of 5 (1)
Icebreaker Siren Bra Sports Bra
$50
user rating: 5 of 5 (1)
Patagonia Merino 3 Midweight Hoody Base Layer Top
$98 - $140
user rating: 5 of 5 (1)
ExOfficio Give-N-Go Lacy Bikini Boxers, Briefs, Bikini
$11 - $23
user rating: 5 of 5 (1)
Patagonia Merino Air Hoody Base Layer Top
$89
user rating: 5 of 5 (1)
Under Armour Catalyst Longsleeve T Base Layer Top
$25
user rating: 5 of 5 (1)
Smartwool NTS Mid 250 Bottom Base Layer Bottom
$69 - $100
user rating: 5 of 5 (1)
Marmot Midweight Crew LS Base Layer Top
$24
user rating: 5 of 5 (1)
Patagonia Capilene 3 Midweight Bottoms Base Layer Bottom
$21 - $59
user rating: 4 of 5 (4)
Smartwool Lightweight Zip T Base Layer Top
$50 - $64
user rating: 4.5 of 5 (1)
Sherpa Adventure Gear Baans Tech Quarter Zip Base Layer Top
$25
user rating: 4.5 of 5 (1)
Patagonia Capilene Lightweight T-Shirt Base Layer Top
$15 - $39
user rating: 4.5 of 5 (1)
Smartwool Microweight Bottom Base Layer Bottom
$52 - $74
user rating: 4.5 of 5 (1)
ExOfficio Give-N-Go Sport Mesh Brief Boxers, Briefs, Bikini
$19 - $26
user rating: 4.5 of 5 (1)
Patagonia Capilene Lightweight Bottoms Base Layer Bottom
$32 - $49
user rating: 4.5 of 5 (1)
Icebreaker Anatomica Brief Boxers, Briefs, Bikini
$26 - $35
user rating: 4.5 of 5 (1)
Smartwool Midweight Funnel Zip Base Layer Top
$80
user rating: 4.5 of 5 (1)
Kenyon Power Stretch Baselayer Bottoms Base Layer Bottom
$25
user rating: 4.5 of 5 (1)
Mountain Hardwear WayCool Arms Arm or Leg Sleeves
$17
user rating: 4 of 5 (2)
Smartwool Midweight Bottom Base Layer Bottom
$60 - $95
user rating: 4 of 5 (1)
SportHill Northwind Unders Boxers, Briefs, Bikini
$36
user rating: 4 of 5 (1)
Patagonia Capilene Daily T-Shirt Base Layer Top
$17 - $39
user rating: 4 of 5 (1)
Patagonia Capilene 1 Silkweight Crew Base Layer Top
$39
user rating: 4 of 5 (1)
Terramar Thermolator II Pant Base Layer Bottom
$15 - $26
user rating: 4 of 5 (1)
ExOfficio Give-N-Go Lacy Full Cut Brief Boxers, Briefs, Bikini
$11 - $14
user rating: 4 of 5 (1)
Patagonia Capilene 1 Silkweight T-Shirt Base Layer Top
$18 - $24
user rating: 4 of 5 (1)
Under Armour Original Series 9-inch Boxerjock Boxers, Briefs, Bikini
$20
user rating: 4 of 5 (1)
Ibex Zepher Zip T-Neck Base Layer Top
$80
user rating: 4 of 5 (1)
Icebreaker 200 Lightweight Legging Base Layer Bottom
$60 - $70
user rating: 3.5 of 5 (2)
ExOfficio Give-N-Go Boxer Boxers, Briefs, Bikini
$13 - $26
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