The 10 Best Men's Long Underwear

Updated December 05, 2017 by Sam Kraft

10 Best Men's Long Underwear
Best High-End
Best Mid-Range
Best Inexpensive
We spent 45 hours on research, videography, and editing, to review the top choices for this wiki. Whether you live in a cold weather climate or just like to be prepared for a last-minute skiing or hiking trip, a pair of long underwear can singlehandedly make the different between comfort and agony. This selection of men’s long johns includes options for men of all sizes and body types, and some even come with a top layer as well. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best men's long underwear on Amazon.

10. Hanes X-Temp

The elastic waist and flexible fabric of the Hanes X-Temp are designed to conform to your body and adapt to your temperature, warming you up or cooling you down when you need it. However, with only one layer, it's not ideal for severe cold.
  • fabric feels smooth on your skin
  • fits like boxer briefs in the crotch
  • can feel loose around the knees
Brand Hanes
Model 25442
Weight 16 ounces
Rating 3.6 / 5.0

9. FitExtreme MaxHeat

Constructed with an extra thick fabric, the FitExtreme MaxHeat reduces friction between your top layer of clothing and your long johns. It stretches in a way that makes the wearer look slimmer, even if the ankles are a little loose.
  • does not irritate the skin
  • thin but with strong heat retention
  • top is too short for tall people
Model pending
Weight pending
Rating 4.0 / 5.0

8. Ekouaer Base

Ideal for snowboarding, skiing and hiking enthusiasts, the Ekouaer Base will keep you warm in severe weather conditions and wick away any moisture that tries to accumulate. It’s available in a variety of sizes, so you can grab a pair for everyone in the family.
  • strong rear seams will not tear
  • safe to use an iron on
  • waistband can feel a bit tight
Brand Ekouaer
Model EK001372
Weight pending
Rating 4.1 / 5.0

7. Duofold Mid-Weight

Two thermal layers that make up the Duofold Mid-Weight work to trap warm air, resulting in a chill-blocking barrier that keeps you at a comfortable temperature without causing excessive sweating. It’s made mostly of cotton, which is gentle on the skin.
  • elastic ankle cuffs keep air out
  • 5 color options available
  • length is not ideal for long legs
Brand Duofold
Model KMW2
Weight 16 ounces
Rating 4.4 / 5.0

6. CYZ Collection Long

The CYZ Collection Long features a classic waffle knit and a durable combination of cotton and polyester that makes it long-lasting and soft to the touch. No matter how many times you wear it or wash it, you can be confident it will retain its shape.
  • flat seams prevent chafing
  • lack of tags makes it itch-free
  • lightweight and breathable
Brand CYZ Collection
Model pending
Weight pending
Rating 3.8 / 5.0

5. Carhartt Base Force

When you don the Carhartt Base Force, you won’t have to worry about lingering sweat or unpleasant odors. It offers a classic look and impressive ease of movement, with the Carhartt logo plastered on the waistband in case you forget you’re an outdoorsman.
  • can be machine washed
  • provides an ideal amount of stretch
  • attractive fly design on the crotch
Brand Carhartt
Model 101825
Weight 4 pounds
Rating 4.9 / 5.0

4. Tesla Blank

Not only is the Tesla Blank a nice value, it includes bottoms and a long-sleeve top that conforms to your upper body. The combination offers dependable insulation and ample stretch so your movement won’t be restricted in any way.
  • top and bottoms lined with fleece
  • does not look bulky beneath clothes
  • allows for good air circulation
Brand Tesla
Model pending
Weight 3.2 ounces
Rating 4.7 / 5.0

3. Smartwool NTS

The Smartwool NTS is designed with a waist that rises higher than most brands, keeping your torso warm and the fabric tight. This heavy-duty option generates enough heat retention to be worn as a single layer in cool weather or as a base layer in super-cold weather.
  • made with quality merino wool
  • fabric dries quickly
  • 6 designs to choose from
Brand SmartWool
Model SW-NP605-$P
Weight 14.9 ounces
Rating 4.9 / 5.0

2. Saxx Fly Bottom

The Saxx Fly Bottom comes in charming winter patterns, like snowflakes and reindeer, but is also available in classic black or rugged camouflage. Its extra-soft viscose fabric breathes well and engulfs your body in a silky texture that leaves you feeling luxurious.
  • strong stitching will last for years
  • suitable for running or cycling
  • will not shrink in the wash
Brand Saxx
Model SXLJ30F
Weight 16 ounces
Rating 5.0 / 5.0

1. Minus33 Merino

A high-performance mid-weight option that provides warmth without too much bulk, the Minus33 Merino does not have any tags, which helps eliminate the risk of itching. It also offers extremely large sizes for the big fellas out there.
  • fire-resistant fabric
  • comes with a 30-day guarantee
  • wicks away moisture to prevent odors
Brand Minus33 Merino Wool
Model 706
Weight 16 ounces
Rating 4.7 / 5.0

Protecting The Jewels

We men place a great deal of importance on an area of the body that, at the end of the day, isn’t even technically necessary for our immediate survival. We spend far less time concerned with the health and well-being of our hearts, for example, even as heart disease remains the leading cause of death in our culture. The doctors all tell us to eat less red meat, exercise more, and increase our intake of green leafy vegetables, yet we don’t seem too inclined to listen. I’m willing to bet that if the behaviors that are bad for our hearts were to cause sudden shrinkage and other malfunctions to our genitalia, the meat industry would collapse within a week.

There are a few things that can cause adverse effects in this region, however, and we’re pretty good about avoiding them. We have sturdy jock straps to hold hard plastic cups in a protective position while playing dangerous sports. The market also offers all manner of powders and creams intended to keep the area dry and the skin down there healthy.

From the standpoint of evolutionary psychology, this increased attention on our reproductive organs is actually pretty sensible. If you’re doing something today that’s going to make your heart fail in 20 years, but that doesn’t pose an immediate threat to the family jewels, then you still have plenty of time to reproduce. Many sociologists posit that this orientation — towards procreation as the ultimate driving force of existence — underlies every decision we make, from the clothes we wear to our artistic ambitions.

Those clothes, however, might cause an unintended consequence in our search for a mate, and it turns out to be one of the more gradual killers of our reproductive potential. Like the issues with poor diet and lack of exercise, though, the effects take so long to accumulate that we scarcely provide against it. We’re talking here about temperature.

The very reason that the male body keeps its testes in a sack is to regulate their temperature. When it’s very warm, those testes can hang loose, catching more air and staying safely cool. When it’s too cold, those testes can retract up into the body where they can stay nice and cozy. Too much time in an environment that’s too hot or too cold can have a significantly adverse effect on motility and other reproductive factors.

To combat this effect in cold weather, the best thing that you can do is to add layers that will help keep your core temperature higher while also regulating the heat around your most important region. Briefs can help insulate the testicular area in particular, but they often leave the upper thighs exposed, which lowers the temperature of the region too greatly. Boxers provide too much airflow, which will quickly freeze the area over, and boxer-briefs have a tendency to ride up the leg, creating the same problem as regular briefs, but with the addition of significant discomfort.

The answer to all these issues is the long underwear. While no longer used by the legions of men who once swore by them, long underwear keeps your reproductive area warm while also insulating your thighs and beyond, all without any bunching. What’s more, the warmth in your lower thighs, calves, and ankles will help keep blood flowing to your feet, so they can stay warm in even the most frigid environments.

How To Choose The Right Long Underwear

The most important thing to consider when choosing from among the long underwear sets on our list is comfort. This is largely a personal preference, but long underwear can usually be divided into two categories that will cut your options roughly in half from the start.

Some long underwear better resembles the long johns of yore, with a loosely hanging, thickly knit material. You can often identify these pairs on sight, as they tend to have more visible texture, as well as a small amount of bunching around the ankles of the model.

Other long underwear sets are more like modern compression pants. In addition to causing little to no bunching, these set often increase circulation in the legs through compression, which can help keep you warm. Some find the snug fit of these styles too constricting, however.

If you plan on engaging in demanding physical activity in very cold weather — a good Thanksgiving football game, for example — compression-style underwear might be your best bet. For lounging around the house without putting on real pants, the looser kind is ideal.

A Brief History Of Underwear

While you might feel like a rebel any time you decide to go commando (one of the many euphemisms for intentionally neglecting to wear underpants), you’re actually reaching back to the not-so-distant past for your inspiration. That’s because the use of underwear has waxed and waned with civilizations throughout history, and underwear in its modern form hasn’t been very popular for more than a century or so.

If you’re of the biblical persuasion, then you probably believe that the first human underwear was the fig leaf. Radio carbon dating tells us that the age of the oldest discovered material used as a primitive loincloth is a little over 7,000 years, however. Unless that cloth was made of dinosaur hide, there may be a problem with the biblical timeline. Those early loincloths cropped up in several cultures around the world, and evolved through countless iterations over millennia, including everything from the bustle and the codpiece to the union suit.

The spinning jenny and cotton gin inventions of the 18th century were probably the biggest turning points in underwear history, as more styles and sizes could be produced in less time. Modern men’s underwear, including tighter briefs, evolved through the 20th century — often undergoing wartime innovations — to give us the wide variety we see in use today.

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Last updated on December 05, 2017 by Sam Kraft

Sam is a marketing/communications professional and freelance writer who resides in Chicago, IL and is perpetually celebrating the Cubs’ 2016 World Series victory.

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