Base Layers and Underwear


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


Under Armour
Moving Comfort




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

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

ExOfficio Give-N-Go Lacy Bikini

rated 5 of 5 stars This underwear is great for hiking, backpacking, travel, and everyday use. The material is soft, it wicks moisture and has a comfortable fit. It's hard to find women's underwear that stays comfortable through miles of backpacking, but the ExOfficio Give-N-Go Lacy Bikini brief does just that. The nylon/spandex blend has four-way stretch that provides good coverage without bunching up or chafing and feels soft to touch. The flat lacy band provides a feminine touch to a technical product, which is… Full review

Top-Rated Base Layers and Underwear

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Icebreaker Sprite Hot Pant Boxers, Briefs, Bikini
$4 - $40
Icebreaker Oasis Legless Base Layer Bottom
$5 - $80
REI Lightweight Long Underwear Crew Top Base Layer Top
ExOfficio Give-N-Go Bikini Brief Boxers, Briefs, Bikini
$11 - $22
ExOfficio Give-N-Go String Bikini Boxers, Briefs, Bikini
$11 - $40
REI Midweight Long Underwear Bottoms Base Layer Bottom
$11 - $29
ExOfficio Give-N-Go Full Cut Brief Boxers, Briefs, Bikini
$12 - $20
ExOfficio Give-N-Go Brief Boxers, Briefs, Bikini
$13 - $20
ExOfficio Give-N-Go Lacy Low Rise Bikini Boxers, Briefs, Bikini
$13 - $21
ExOfficio Give-N-Go Tank Top Base Layer Top
$13 - $19
Under Armour Mesh 6" Boxerjock Boxers, Briefs, Bikini
REI Lightweight Long Underwear Zip Top Base Layer Top
ExOfficio Give-N-Go Cross Over Bra Sports Bra
$13 - $16
user rating: 4 of 5 (1)
ExOfficio Give-N-Go Lacy Full Cut Brief Boxers, Briefs, Bikini
$13 - $14
ExOfficio Give-N-Go Lacy Thong Boxers, Briefs, Bikini
$13 - $21
user rating: 5 of 5 (1)
ExOfficio Give-N-Go Lacy Bikini Boxers, Briefs, Bikini
$13 - $23
Cabela's MTP Heavy Weight 1/4 Zip Base Layer Top
Cabela's MTP Polar-Weight Bottom Base Layer Bottom
Cabela's MTP Polar-Weight 1/4 Zip Base Layer Top
$13 - $24
ExOfficio Give-N-Go Sport Brief Boxers, Briefs, Bikini
$14 - $20
Under Armour Original Series 6-inch Boxerjock Boxers, Briefs, Bikini
$14 - $20
EMS Midweight Baselayer Pant Base Layer Bottom
Moving Comfort Workout Thong Boxers, Briefs, Bikini
$14 MSRP
Patagonia Capilene Daily Boxer Briefs Boxers, Briefs, Bikini
$14 - $29
Under Armour HeatGear Legging Base Layer Bottom
$14 - $25
Marmot DriClime Crew LS Base Layer Top
Columbia Baselayer Midweight Tight Base Layer Bottom
$15 - $30
Patagonia Barely Hipster Boxers, Briefs, Bikini
$15 - $22
SAXX Kinetic Brief Fly Boxers, Briefs, Bikini
Polarmax Maxride Pants Base Layer Bottom
$15 - $19
user rating: 4 of 5 (1)
Terramar Thermolator II Pant Base Layer Bottom
$15 - $26
Patagonia Capilene 1 Silkweight Briefs Boxers, Briefs, Bikini
Patagonia Barely Bikini Boxers, Briefs, Bikini
$15 - $22
Under Armour M-Series Boxerjock Boxers, Briefs, Bikini
user rating: 4 of 5 (1)
Patagonia Capilene 1 Silkweight T-Shirt Base Layer Top
$15 - $24
Patagonia Barely Thong Boxers, Briefs, Bikini
$15 - $22
Smartwool Microweight Thong Boxers, Briefs, Bikini
$16 - $19
Dynafit Performance Sleeves Arm or Leg Sleeves
Cloudveil Lightweight Crewneck Top Base Layer Top
Under Armour ColdGear Subzero Mock Base Layer Top
$16 - $199
Patagonia Active Hipster Boxers, Briefs, Bikini
$16 - $24
Patagonia Active Briefs Boxers, Briefs, Bikini
$16 - $24
ExOfficio Give-N-Go Lacy Tank Base Layer Top
ExOfficio Give-N-Go Shelf Bra Camisole Sports Bra
$16 - $42
Moving Comfort Workout Bikini Boxers, Briefs, Bikini
$16 MSRP
SAXX Fiesta Boxer Boxers, Briefs, Bikini
$16 - $24
Tasc Performance Endurance Sport Bra Sports Bra
$16 - $29
REI Mesh MTS Briefs Base Layer Bottom
REI Midweight Quarter-Zip Top Base Layer Top
user rating: 3.5 of 5 (2)
ExOfficio Give-N-Go Boxer Boxers, Briefs, Bikini
$17 - $26
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