Base Layer Bottoms

Brand

Patagonia
Helly Hansen
Smartwool
Marmot
Under Armour
Fjallraven
Coldpruf
Ibex
Terramar
Avalanche Wear

User

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

Price

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

Recent Base Layer Bottom Reviews

Helly Hansen LIFA Merino Pant

rated 4.5 of 5 stars An excellent base layer choice from a company that understands cold and wet weather. The HH LIFA Merino 2-layer construction keeps you warm and dry in all kinds of conditions, and feels great when wearing it. Watch out for the “athletic” fit when purchasing, but if you get the right fit this base layer will keep you comfortable in rain, sleet, and snow well below freezing. Note that this is a companion review with the Helly Hansen LIFA Merino 1/2 Zip top.Product Description Helly Hansen (HH)… Full review

Fjallraven Bergtagen Longjohns

rated 5 of 5 stars The Fjallraven Bergtagen Long Johns is a base layer pant that utilizes wool in three different weaves to maximize heat retention in key areas (butt, groin) and breathability in others (thighs, calves). It’s a total home run of execution and since I received this base layer for testing I have worn nothing else. It’s exceptionally well tailored, durable, doesn’t stink on multi-day trips, and you’ll have no fear around a fire. The only possible negatives are more inherent to wool, than this… Full review

Ridge Merino Inversion Heavyweight Bottoms

rated 4 of 5 stars A warm and comfortable pair of baselayer pants that work particularly well below freezing temps, but they do have sizing limitations. Fit and Comfort: At 6’2” and 190 lbs. (1.88m and 86.2 kg), I typically wear pants with a 31” or 32” waist and a 34” inseam. I tested a men’s medium size, due to its accurate waist size, realizing that the length might be slightly shorter than desired, according to the manufacturer’s sizing chart. In fact, I’d have to jump up two sizes to a men’s… 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

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

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

Patagonia Men's Capilene Lightweight Bottoms

rated 4.5 of 5 stars Go-to sleeping bottom. These are my go-to sleeping bottoms.  They're light enough to wear in the summer, provide a good base layer for the winter, and are more comfortable than laying directly on nylon or whatever. I've never gotten them wet but assume they would dry fast. They fit well, and have a functional fly. One extra chilly day I hiked most of the morning in them before I noticed the micro grid pattern on the inside was causing chafing. Wouldn't recommend putting miles in with these. Great… Full review

Top-Rated Base Layer Bottoms

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user rating: 5 of 5 (2)
Patagonia R1 Pants
$26 - $119
user rating: 5 of 5 (1)
Helly Hansen Fly Pant
$22
user rating: 5 of 5 (1)
Smartwool NTS Mid 250 Bottom
$47 - $94
user rating: 5 of 5 (1)
Patagonia Capilene 3 Midweight Bottoms
$28 - $59
user rating: 5 of 5 (2)
Marmot Midweight Bottom
$50 MSRP
user rating: 5 of 5 (2)
Under Armour ColdGear Fitted Legging
$50 MSRP
user rating: 5 of 5 (1)
Fjallraven Bergtagen Longjohns
$140 MSRP
user rating: 5 of 5 (1)
Coldpruf Platinum Pants
user rating: 5 of 5 (1)
Patagonia Merino Air Bottoms
user rating: 5 of 5 (1)
Ibex Woolies 2 Bottom
user rating: 5 of 5 (1)
Terramar Hot Totties Grid Fleece Tights
user rating: 5 of 5 (1)
Avalanche Wear Mogul Fleece Legging
$50 MSRP
user rating: 5 of 5 (1)
Coldpruf Platinum II Pant
$33 MSRP
user rating: 5 of 5 (1)
Marmot Lightweight Bottom
$40 MSRP
 
user rating: 5 of 5 (1)
Haglofs Bungy Q Tights
 
user rating: 5 of 5 (1)
Sugoi Global Tight
discontinued
user rating: 5 of 5 (1)
Icebreaker GT 260 Rapid Legging
discontinued
user rating: 5 of 5 (1)
Under Armour ColdGear Frosty Tight
discontinued
user rating: 4.5 of 5 (1)
Patagonia Capilene Lightweight Bottoms
$35 - $49
user rating: 4.5 of 5 (1)
Ridge Merino Inversion Midweight Bottoms
$50 MSRP
 
user rating: 4.5 of 5 (1)
Eddie Bauer First Ascent Midweight Baselayer Pants
$45 MSRP
user rating: 4.5 of 5 (1)
Smartwool Microweight Bottom
$70 MSRP
user rating: 4.5 of 5 (1)
Helly Hansen LIFA Merino Pant
$90 MSRP
 
user rating: 4.5 of 5 (1)
Smartwool Synergy Sport Pant
discontinued
user rating: 4.5 of 5 (1)
Kenyon Power Stretch Baselayer Bottoms
discontinued
 
user rating: 4.5 of 5 (1)
ExOfficio Give-N-Go Skivvy Pant
discontinued
user rating: 4 of 5 (2)
Smartwool Midweight Bottom
$62 - $95
user rating: 4 of 5 (1)
Terramar Thermolator II Pant
$15 - $17
user rating: 4 of 5 (1)
Icebreaker 200 Lightweight Legging
$53 - $70
user rating: 4 of 5 (2)
Terramar SmartSilk Tights
$60 MSRP
user rating: 4 of 5 (1)
RedRam Merino Legging
 
user rating: 4 of 5 (1)
REI Heavyweight MTS Bottoms
$35 MSRP
user rating: 4 of 5 (1)
Ridge Merino Inversion Heavyweight Bottoms
$80 MSRP
user rating: 4 of 5 (1)
Stoic Breathe Composite Bottom
discontinued
user rating: 4 of 5 (1)
Isis Wool Tight
discontinued
user rating: 3 of 5 (4)
Avalanche Wear Mogul Pant
$50 MSRP
user rating: 2.5 of 5 (1)
Terramar Hot Totties Fleece Heavy Footy Performance Leggings
user rating: 2.5 of 5 (1)
Sugoi Firewall Tight
discontinued
user rating: 2 of 5 (1)
Terramar Silk Pant
user rating: 0 of 5 (1)
Under Armour ColdGear Metal Legging
discontinued
Sugoi SubZero Tight
$70
Montane Primino 140 Long Janes
$90
Minus33 Tecumseh Midweight 3/4 Bottoms
$60
Marmot Meghan Capri
$22 - $31
Patagonia Capilene Thermal Weight Boot-Length Bottoms
$60
Helly Hansen LIFA Pant
$22
Hot Chillys Micro-Elite Chamois Bottom
$55
REI Lightweight Base Layer Bottoms
$26
Icebreaker Vertex Leggings
$75 - $130
Icebreaker Oasis Legless
$56 - $80
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