Base Layer Bottoms

The best base layer bottoms, reviewed and curated by the Trailspace community. The latest review was added on January 23, 2020. Stores' prices and availability are updated daily.

Recent Base Layer Bottom Reviews

rated 4.5 of 5 stars
Black Diamond Men's Solution 150 Merino Base 3/4

A lightweight, polyester-reinforced merino wool base layer. Cool enough to wear under light shell clothing for high intensity activity at around-freezing temperatures without overheating, but easily layered over for use in colder conditions or at lower intensity. Stretch fabric gives a comfortable fit even on a slim frame and dries a little faster than 100% merino. 3/4 length works with high plastic cuff ski boots. (Preliminary review based on the first month of use) Black Diamond’s Solution 150… Full review

rated 4.5 of 5 stars
Kari Traa Rose Pant

The Kari Traa Rose Pant is a 100 percent merino base layer that is comfortable, warm, and durable. It's thin enough to layer without restricting movement, and incorporates a range of colors and sizes to appeal to a variety of adventurous ladies! Just be prepared to size up as this base layer runs SMALL! Testing Conditions: I tested the Kari Traa Rose Pant from December 2018 to December 2019 as a member of the Trailspace Review Corps. Testing conditions ranged from -25 to 20 degrees Fahrenheit in… Full review

rated 3.5 of 5 stars
Outdoor Research Men's Alpine Onset Bottoms

The Outdoor Research Alpine Onset Bottoms are soft on the skin and easy to maneuver in. They're best when on the move in cool/chilly temps like hiking or bike riding, and they are flexible enough for highly active pursuits. Conditions and Temperatures:I tested the Alpine Onset baselayer bottoms, along with their crew top counterpart, the Outdoor Research Alpine Onset Crew top. These items are part of Outdoor Research's Alpine Onset collection, which includes an array of men's and women's layers. Full review

rated 4 of 5 stars
Omni-Wool Men's Midweight Pant

These were comfortable. They wash well. The size was correct. I would recommend these for anyone that requires a stable undergarment. These were very comfortable. They did not hike up the leg or slide down from the waist. As a police officer out in the cold these kept me warm from the elements and with the dependability that they will stay in place. They have washed well and kept their shape through multiple washings. They seem well made and durable. I do not live in so cold a region to evaluate… Full review

rated 4.5 of 5 stars
Patagonia Men's Capilene Air Bottoms

The Patagonia Capilene Air Bottoms are Patagonia’s newest base layer design which utilizes a unique seamless knit construction that is composed of 51 percent merino wool and 49 percent Capilene recycled polyester. This results in a very stretchy insulation layer that is both light and warm. The knit construction provides a nice thickness that works extremely well inside of waders for long days fishing in cold streams. Overall this is a great base layer, especially for colder conditions. Overview… Full review

rated 5 of 5 stars
Patagonia Men's Capilene Thermal Weight Bottoms

These fleece bottoms are awesome!! I’ve had them for five years now and I wear them ice fishing and fat biking. I will definitely buy another pair if they ever wear out. These fleece bottoms hold up in the coldest temps. They are fleece so they are so comfortable as a base layer. Will definitely purchase another pair if these ever wear out. Full review

rated 0.5 of 5 stars
Avalanche Wear Mogul Pant

Pants pilled (outside of fabric) like crazy after wearing one or two times. Didn't even wash yet. Pilling was on front and side of my thighs. Loved the fit but the pilling is intolerable! Would have purchased several of these; instead will be donating :( Would NOT recommend. Very disappointing! Full review

rated 4.5 of 5 stars
Helly Hansen HH Lifa Merino Pant

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

rated 5 of 5 stars
Fjallraven Men's Bergtagen Longjohns

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

user rating: 5 of 5 (2)
Patagonia R1 Pants
$35 - $119
user rating: 5 of 5 (1)
Fjallraven Bergtagen Longjohns
$140
user rating: 5 of 5 (1)
Patagonia Capilene Thermal Weight Bottoms
$89
user rating: 5 of 5 (1)
Smartwool NTS Mid 250 Bottom
$95
user rating: 5 of 5 (1)
Patagonia Capilene 3 Midweight Bottoms
$35 - $59
user rating: 4.5 of 5 (1)
Helly Hansen HH Lifa Merino Pant
$63 - $75
user rating: 4.5 of 5 (1)
Patagonia Capilene Air Bottoms
$129
user rating: 4.5 of 5 (1)
Black Diamond Solution 150 Merino Base 3/4
$72 - $95
user rating: 4.5 of 5 (1)
Kari Traa Rose Pant
$63 - $100
user rating: 4 of 5 (1)
Terramar Thermolator II Pant
$15
user rating: 3.5 of 5 (1)
Outdoor Research Alpine Onset Bottoms
$48
user rating: 2 of 5 (1)
Terramar Silk Pant
$26 - $55
Outdoor Research Enigma Bottoms
$69
Smartwool Merino 250 Base Layer Bottom
$37 - $130
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)
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)
Helly Hansen Fly Pant
$40 MSRP
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: 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)
Patagonia Capilene Lightweight Bottoms
user rating: 4 of 5 (2)
Smartwool Midweight Bottom
$80 MSRP
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)
Icebreaker 200 Lightweight Legging
$80 MSRP
user rating: 4 of 5 (1)
REI Heavyweight MTS Bottoms
$35 MSRP
user rating: 4 of 5 (1)
Omni-Wool Midweight Pant
$35 MSRP
user rating: 4 of 5 (1)
Ridge Merino Inversion Heavyweight Bottoms
$80 MSRP
user rating: 2.5 of 5 (1)
Terramar Hot Totties Fleece Heavy Footy Performance Leggings
user rating: 2.5 of 5 (5)
Avalanche Wear Mogul Pant
$50 MSRP
 
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)
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 (1)
Stoic Breathe Composite Bottom
discontinued
user rating: 4 of 5 (1)
Isis Wool Tight
$72 MSRP
discontinued
user rating: 2.5 of 5 (1)
Sugoi Firewall Tight
discontinued
user rating: 0 of 5 (1)
Under Armour ColdGear Metal Legging
discontinued

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