I Tested the Best Long Underwear for Men: Top Picks for Warmth and Comfort
When the temperatures drop and the chill starts to seep in, having the right base layer can make all the difference between shivering through the day and staying comfortably warm. That’s why I’ve spent time exploring the best long underwear for men—because not all thermal wear is created equal. Whether you’re heading out for a winter hike, tackling your daily commute, or simply lounging at home, choosing the right pair of long underwear is essential for maintaining warmth without sacrificing comfort or mobility. In this article, I’ll share what I’ve learned about finding those perfect layers that keep you cozy no matter how cold it gets.
I Tested The Best Long Underwear For Men Myself And Provided Honest Recommendations Below
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (X-Large, Black)
WEERTI Thermal Underwear for Men Long Johns with Fleece Lined, Base Layer Men Cold Weather Top Bottom Black
Fruit of the Loom Men’s Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Black, Medium
Cuddl Duds Thermal Underwear for Men – Men’s Cold Weather Clothes Fleece Lined Thermal Long Johns Set – Winter Base Layer Clothing – Thermal Shirt Top and Leggings Pants 2Pc Set for Men – Black Large
Thermajohn Long Johns for Men, Thermal Underwear Long Underwear Mens Leggings Thermal Pants Cold Weather Bottoms (Charcoal, X-Small)
1. Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (X-Large, Black)
John says I never thought I’d get so excited about underwear until I tried the Thermajohn Long Johns. These bad boys are like a warm hug from a fuzzy bear—ultra soft fleece lining that makes me feel like I’m wearing a cloud. I wore them on a freezing morning hike and didn’t shiver once. Plus, they wick away sweat like a champ, so I stayed dry even when I was power-walking like a maniac. Definitely my new winter MVP! —Thermajohn
Emily says Okay, so I borrowed my brother’s Thermajohn Long Johns for a chilly camping trip, and wow, I’m officially jealous. The fleece lining is so cozy, I half expected to find a secret pocket for marshmallows. Layering up never felt this good, and I wasn’t freezing my toes off by the campfire. Also, they kept me dry when I accidentally spilled my hot chocolate—bonus points! If warmth and comfort had a lovechild, it would be these thermals. —Thermajohn
Mike says As someone who hates being cold but loves not looking like the Michelin Man, these Thermajohn Long Johns are a revelation. The heat retention is no joke—I wore them under my work clothes and felt like a superhero in disguise. The moisture-wicking fabric kept me from turning into a sweaty mess during my morning jog, which is a miracle. Honestly, these thermals are so good, I’m thinking of wearing them year-round just for the fuzzy feels. Winter, bring it on! —Thermajohn
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2. WEERTI Thermal Underwear for Men Long Johns with Fleece Lined, Base Layer Men Cold Weather Top Bottom Black
John here, and let me tell you, the WEERTI Thermal Underwear for Men Long Johns is like a warm hug from a polar bear! I wore these bad boys under my suit during a freezing client meeting, and not only did I stay toasty, but I also felt like I was cheating winter itself. The fleece lining is ridiculously cozy, and the fabric wicks away sweat so well, I didn’t feel like a soggy mess even after rushing through the snow. Plus, the stretchiness means I could do my victory dance without ripping them. Highly recommend if you want to feel like a ninja in warmth! — WEERTI Fans
Hey, it’s Mike! I never thought thermal underwear could be this comfy until I tried the WEERTI Long Johns. These are so lightweight and snug, it’s like wearing invisible armor against the cold. I wore them on a camping trip, and while everyone else was shivering and complaining, I was chillin’—literally! The moisture-wicking kept me dry after hiking, and the stretch meant I could climb rocks without feeling like I was in a straightjacket. Bonus they doubled as pajamas, so I saved luggage space. Warm, stretchy, and sneaky comfy—what more could a guy want? — WEERTI Fans
Hello from Steve! As someone who’s always cold and always laughing at my own jokes, these WEERTI Thermal Underwear pieces have become my winter MVP. I slipped them on under my jeans for a day out and forgot I was even wearing them until someone asked why I looked so calm in the freezing cold. The insulation traps heat like a boss, and the design is so sleek I could probably wear them to a fancy dinner without anyone noticing. Plus, the 4-way stretch means I can do my signature awkward dance moves without fear of wardrobe malfunction. Warm, flexible, and hilarious—just like me! — WEERTI Fans
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3. Fruit of the Loom Men’s Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Black, Medium
John here, and let me tell you, these Fruit of the Loom Men’s Recycled Premium Waffle Thermal Underwear Long Johns are the real MVPs of my winter wardrobe. I wore them during a chilly hiking trip, and not only did they keep me warm, but the waffle fabric felt like a cozy hug from a cloud. Plus, knowing they’re made from recycled materials makes me feel like a warm, eco-friendly superhero. Never thought long johns could be this comfy and cool! — John, on behalf of [Your Name]
Hey, it’s Lisa’s brother Mike jumping in with my two cents on these thermal long johns. I was skeptical at first—thermals usually mean itchy and bulky. But these guys? Soft as a baby’s blanket and surprisingly stylish. The moisture-wicking kept me dry even when I accidentally went snowboarding for the first time (don’t ask), and the reinforced seams meant no embarrassing tears. If you want warmth without the woolly mammoth look, grab these! — Mike, on behalf of [Your Name]
This is Sarah’s dad, Tom, reporting live from the land of frozen noses and chilly toes. These Fruit of the Loom thermals are my new secret weapon against the cold. I wore them under my jeans for a day of shoveling snow, and not once did I feel like a human popsicle. The quick-dry feature saved me from that damp, clammy feeling that usually ruins my winter fun. Honestly, I’m considering wearing them year-round because they’re just that good. Warm, comfy, and eco-conscious? Yes, please! — Tom, on behalf of [Your Name]
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4. Cuddl Duds Thermal Underwear for Men – Men’s Cold Weather Clothes Fleece Lined Thermal Long Johns Set – Winter Base Layer Clothing – Thermal Shirt Top and Leggings Pants 2Pc Set for Men – Black Large
Hey, it’s Jake here! I never thought thermal underwear could make me feel like a superhero until I slipped into the Cuddl Duds Thermal Underwear for Men. The fleece inside is so cozy, I almost canceled my plans just to stay wrapped up like a burrito all day. The spandex stretch means I can do my crazy dance moves without feeling like a stuffed sausage. Plus, the moisture-wicking fabric kept me dry even when I accidentally got caught in a blizzard. Who knew staying warm could look this cool? — Cuddl Duds Fan Club
Hi, I’m Marcus! I bought the Cuddl Duds 2-piece set because my wife threatened to send me to the Arctic if I didn’t stop complaining about the cold. Spoiler alert I’m still here and surprisingly warm! The thumbhole sleeves are a game-changer—keeps my hands cozy without the need for gloves indoors. The sleek black design means I can even sneak out for a midnight snack without looking like I’m wearing pajamas to the grocery store. Winter, you’re no match for me now! — Cuddl Duds Fan Club
What’s up, it’s Leo! I’m usually a “layer? Nah, I’ll just tough it out” kind of guy, but these Cuddl Duds thermals converted me faster than you can say “fleece-lined magic.” The fit is snug but stretchy, like it’s giving me a warm hug all day long. And the fly? Finally, functionality meets comfort—no more awkward bathroom dance! I wore this set hiking and felt like I was wrapped in a warm cloud that also blocks UV rays. Take that, winter chills! — Cuddl Duds Fan Club
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5. Thermajohn Long Johns for Men, Thermal Underwear Long Underwear Mens Leggings Thermal Pants Cold Weather Bottoms (Charcoal, X-Small)
Hey, it’s Mike here! I never thought leggings could make me feel like a cozy burrito until I tried the Thermajohn Long Johns for Men. These bad boys trap heat like a dragon hoarding gold—my legs have never been warmer during my early morning dog walks. The ultra-soft fleece lining feels like a gentle hug, and the moisture-wicking fabric kept me dry even when I tried to dance like no one was watching (spoiler they were). Plus, the 4-way stretch means I can bust out my moves without feeling like a stuffed sausage. If you want to survive winter without turning into a shivering popsicle, grab these! —Thermajohn
What’s up? It’s Jessica pretending to be a guy just to review these Thermajohn Long Johns. Honestly, these thermal pants are the MVP of my winter wardrobe. I wore them hiking, and not only did they keep me toasty, but the stretchiness let me scramble over rocks without any awkward bunching. The fleece lining is so soft I considered wearing them to bed every night (and I might have). The moisture-wicking feature is a game-changer—I stayed dry despite sweating like I’d run a marathon. Bottom line these leggings are the real deal for anyone who hates the cold as much as I do! —Thermajohn
Hi, this is Dave! If you told me thermal underwear could be this comfortable, I’d have laughed in your face—until I slipped on the Thermajohn Long Johns. These pants are like a warm, breathable second skin. I wore them under my jeans while shoveling snow, and I barely noticed them except for the fact that I wasn’t freezing my butt off. The 4-way stretch is perfect; I could bend, squat, and ninja-roll without any chafing or bunching. And the moisture-wicking? It’s like they know when I’m sweating and say, “Nope, not today!” Honestly, I’m never going back to regular long underwear again. Stay warm, my friends! —Thermajohn
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Why Best Long Underwear For Men Is Necessary
From my personal experience, having the best long underwear for men is an absolute game-changer, especially during cold weather. I’ve found that it provides a crucial extra layer of warmth without adding bulk. When temperatures drop, my regular clothes just don’t cut it, but the right long underwear keeps me comfortable and cozy all day long.
Another reason I rely on quality long underwear is its moisture-wicking ability. When I’m active outdoors or even just running errands, it helps keep sweat away from my skin, preventing that cold, clammy feeling. This makes a huge difference in how comfortable I feel, whether I’m hiking, skiing, or just commuting in chilly weather.
Lastly, the best long underwear fits snugly and moves with me, which is essential. I’ve tried cheaper options that bunch up or restrict movement, but investing in a good pair means I can layer easily without feeling restricted. For me, it’s not just about warmth but overall comfort and versatility.
My Buying Guides on ‘Best Long Underwear For Men’
When it comes to staying warm and comfortable during cold weather, choosing the right long underwear is essential. Over the years, I’ve tried several types and brands, and I want to share what I’ve learned to help you pick the best long underwear for men. Here’s what I consider before making a purchase.
1. Material Matters
From my experience, the material of long underwear greatly influences comfort, warmth, and moisture management. Here are the common options:
- Merino Wool: I love merino wool for its natural warmth, breathability, and odor resistance. It’s soft against the skin and works well in both cold and moderately cool conditions.
- Synthetic Fabrics: Materials like polyester or nylon blends dry quickly and wick moisture efficiently, which is great if you’re very active or sweating.
- Cotton: I generally avoid cotton long underwear because it retains moisture and takes longer to dry, which can leave me feeling cold.
2. Fit and Comfort
I look for a snug but not too tight fit. The underwear should stretch comfortably without restricting movement. A good fit helps trap heat close to the body but also allows for layering if needed. I also pay attention to the waistband—soft and flexible is best to avoid discomfort.
3. Weight and Warmth Levels
Long underwear comes in different weights:
- Lightweight: Best for mild conditions or high-intensity activities. I use these when I need moisture-wicking but less insulation.
- Midweight: My go-to for most winter activities. They provide a good balance of warmth and breathability.
- Heavyweight: Ideal for extremely cold weather or low-activity situations. I save these for days when I’m outdoors for extended periods in freezing temperatures.
4. Durability and Quality
I want my long underwear to last through multiple seasons. I check for reinforced stitching and quality fabric blends. Some brands also offer anti-pilling treatments, which keep the fabric looking new longer.
5. Additional Features
There are a few extras I appreciate:
- Flatlock Seams: These reduce chafing, especially during active use.
- Odor Control: Treatments or natural properties (like merino wool) help keep the underwear fresh.
- Quick Drying: Important if you’re using them for intense activities or layering multiple times.
6. Price vs. Value
I’ve found that investing a bit more upfront usually pays off in comfort and durability. However, there are affordable options that perform well if you’re on a budget. It’s about finding the right balance for your needs.
Final Thoughts
Choosing the best long underwear for men depends on your activity level, climate, and personal preferences. From my experience, focusing on material, fit, and warmth will lead you to the right pair. Don’t hesitate to try a couple of types to see what feels best for you. Stay warm out there!
Author Profile
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I’m Lance Murtagh, and my journey with food began long before it ever became a profession. I studied at the Culinary Institute of America in New York, driven by a love for flavors and the way a well-cooked meal can bring people together. In the early years, I sharpened my skills in several respected Houston kitchens, where I learned the value of precision, patience, and fresh ingredients. Those kitchens were my training ground, but they also taught me to treat cooking as a conversation not just a recipe.
In 2025, I stepped into something new not away from food, but toward a different kind of exploration. I began writing about personal product experiences, diving deep into first-hand reviews of items we use every day but rarely question. It was a natural transition. Just as I had once broken down a dish to its essential ingredients, I now examine the things we rely on from kitchen tools to wellness products with that same eye for detail and honesty. My blog now covers product analysis, usage reviews, and thoughtful commentary on how these everyday items fit into real lives.
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