Best Thermal Pants for Men of 2026

"I wore these on a 3-day hunting trip in freezing, snowy conditions and stayed warm and comfortable the entire time. The fit was perfect for layering—snug but not tight. Plus, they're soft to the touch. Definitely recommend for anyone needing reliable warmth!"

"I bought these for my husband who works outside in cold barns daily. He absolutely loves them. The length is ideal, the material is stretchy and very soft, and even after a month of frequent washing and heavy use, they still look and feel great. Exceeded our expectations! My only minor wish is for more color choices."

"As someone who is 6'2" and 200 pounds, I found the fit to be comfortable—not skin tight but not baggy either. The quality is top-notch and they keep me very warm. Honestly, they also make for amazing pajamas! Definitely worth every penny."

"When I wore these merino wool base layers during a golfing session in 40°F windy weather, my legs stayed perfectly warm and comfortable—never too hot, never too cold. I’ve tried many long johns living in a northern climate, and these are by far the best I’ve ever owned. The fit was spot on for my 33” waist and 32” inseam (size medium), and even under thin golf pants, I felt the difference. Snug without being tight and incredibly soft, these are now my go-to base layer."

"As someone who rides motorcycles and works outdoors in the cold, I picked up the medium black 250 and it’s been ideal for chilly rides and workdays. At 5'10" and 180 lbs, the fit is a touch loose but the length is perfect. Even after two years of regular use, there’s only a minor hole at the ankle. Warmth, durability, and quality high socks—these base layers deliver serious comfort and value."

"I wore these on a trip to Antarctica, and I was actually almost too warm at times! Layered under waterproof bibs in 30°F, they kept me toasty the whole time. Even when I switched to hunting in Michigan, they became my essential layer for real cold. They’re thin enough to fit under anything and don’t cause overheating—a total game changer for extreme weather."

"I'm 6'7" with a 38" waist, and these fit me perfectly—kept me warm and comfortable even at -4°F. I appreciate that the sizing runs a bit large and the overall quality is what I expect from Carhartt."

"Working outdoors in harsh winters, I needed a serious upgrade, and this delivers. It’s lightweight, comfortable under work clothes, and keeps me warm without any bulk. Highly recommend for anyone braving cold conditions."

"My boyfriend works in the oilfield in Alberta and these were a hit—he says they keep his legs warm and are good quality. Definitely worth the purchase!"

"As a law enforcement officer in New York, I rely on these as my go-to base layer under my uniform. The XL fits me great at 5'10" and 220 lbs, providing excellent warmth without causing sweat. My only suggestion for improvement is adding an access opening for convenience."

"I spend all day working outdoors, and these thermals have become my must-have base layer. The soft inner lining and snug fit (I'm 5'11", 180 lbs, and wear size large) make a big difference in cold, windy conditions. Plus, they're breathable and have held up well over time."

"I got this as a gift for my boyfriend, who works outside in all kinds of weather. He loves the buttery soft material, and says it fits perfectly and keeps him warm without feeling heavy. The quality is impressive and it fits true to size."

"When I first opened the package, I wasn't expecting much, but once I put these on, I could immediately feel the quality and comfort. The material is thin yet durable on the outside, with a soft, cozy inner lining. As someone who works construction outdoors and rides a Harley to work, I really appreciate how fast I start to feel warmer—these pants are a game changer for cold mornings and long days outside. For the price, I'm impressed and plan to buy more, especially since they're as good as some big-name brands I've tried."

"These are hands-down the most comfortable leggings I've worn. I use them every day at work and when jogging in the chilly Pacific Northwest mornings. The single inseam gives a flattering, secure fit, and they dry super fast. They’re great for wind protection and style—I honestly can’t recommend them enough."

"After adding these fleece-lined compression pants to my athletic wardrobe, they've become my go-to for cold weather. They do an amazing job of trapping heat and keeping me warm during workouts and outdoor activities. The compression supports circulation and muscle recovery, and the construction is durable with reinforced seams. Even after regular use and washing, they maintain their shape and warmth. I really appreciate the customizable fit and moisture-wicking fabric—it’s a solid five-star product for me!"

"These thermal underwear have been a must-have for cold weather. I use them at outdoor events, and they keep me warm without bulk, even after several washes. The fleece lining is soft, and I can layer them easily under my clothes. Definitely recommend for anyone facing chilly conditions."

"As a motorcycle rider in California, I love how these serve as a perfect base layer for 40°F rides. At 6'1" and 245 lbs, the 3XL size fits me perfectly. They keep me comfortably warm at high speeds, even with just a light jacket. For the price, they’re outstanding value for moderate winter conditions."

"I wear these for jogging and walking outside in freezing temperatures. The fit is snug in a good way, and they hold heat well without shrinking or pilling after multiple washes. Even while sweating or weightlifting, I stay comfortable and dry. I plan to buy more sets to rotate during winter."

"I'm really impressed by how warm these are in windy, cool weather—my legs feel much warmer than the rest of me when cycling. The thin fleece lining does the job and they fit securely, with enough stretch to stay comfortable."

"As someone who's 6'4” and 210 lbs, I was worried about the fit, but they fit perfectly and the fabric is really soft and well-made. For the price, the quality is outstanding. I definitely plan to wear them for outdoor runs."

"The material is soft and high quality, not thin at all, and the fit matches what I expected. Reviews from others my size helped me choose correctly. Highly recommend these pants!"

"The fleece lining is incredibly soft and does a fantastic job at keeping me warm even in freezing conditions. I love that the fabric hugs my body without feeling restrictive, and after numerous washes, it still looks and feels new. This set layers perfectly without adding bulk—definitely my go-to thermal wear."

"I’m always cold, especially due to chemo-induced neuropathy, so I needed something lightweight yet warm that I could wear under my suits or casual clothes. This thermal set fits the bill perfectly—the sizing was almost spot on, and it’s comfortable enough for church or fishing. I’ll definitely buy again if needed."

"These are thin enough to fit under jeans but still block the wind pretty well. I wear them at work on the docks and they really take the edge off the cold. If it’s extremely cold and windy, though, you’ll want to pair them with a heavier outer layer."

"I’ve tried several thermal sets, and these are by far the most comfortable and effective. The lightweight feel, soft fleece lining, and snug fit keep me warm without feeling bulky. I especially appreciate how the material stretches and holds up well after washing—no shrinking or pilling. It’s an ideal base layer for outdoor activities or just lounging at home."

"I bought these for my husband for our Alaska trip, and he stayed perfectly warm on the coldest days. The fit was tight, which made layering easy, and we haven’t experienced any shrinking after washing. Great for pairing under clothes and perfect for travel."

"I work outside in construction, and these thermals have been a game changer. They keep me warm without causing me to overheat, and the comfortable, stretchy fit lets me move freely all day. Definitely the best thermals I’ve owned."

"I really appreciate that these are lightweight yet keep me warm without any fleece lining—which is rare to find these days. I did notice the top shrank a bit after washing, but since I sized up, it still fits well. I'm planning to buy more sets because they're just that functional."

"These are incredibly cozy and fit just right! I’ve had them on all day and they’ve been the perfect layer for warmth and comfort. If you want something soft to lounge in or wear under clothes, I highly recommend these."

"I got these as a thin underlayer for warmth beneath my jeans, and they did the job perfectly. My only minor gripe is that the fabric can tear if you’re not careful (I made a hole at the ankle), and the fit is a bit snug—so if you have muscular legs or a fuller figure, you might want to size up."