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🔥 Elevate your cold-weather game with Thermajohn – warmth meets freedom!
Thermajohn Long Johns for Men combine advanced heat retention, ultra-soft fleece lining, and moisture-wicking breathable fabric with 4-way stretch technology. Designed for cold weather, these thermal leggings provide unmatched comfort, dryness, and flexibility—ideal for layering or solo wear during winter activities or relaxing at home.



















| ASIN | B0C9FWB723 |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | High Stretch |
| Apparel Fabric Weight Class | Lightweight |
| Apparel Occasion and Lifestyle | Casual |
| Best Sellers Rank | #332,630 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #51 in Men's Thermal Underwear Bottoms |
| Brand Name | Thermajohn |
| Care instructions | Machine Wash |
| Closure type | Pull On |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 3,958 Reviews |
| Fabric Stretchability | Stretchable |
| Fabric Type | 92% Polyester, 8% Spandex |
| Fabric type | 92% Polyester, 8% Spandex |
| Fit Type | Regular |
| Fit to Size Sentiment | Neutral |
| Front Pleat Type | Flat Front |
| Garment Size Country | United States |
| Global Trade Identification Number | 00810121584026 |
| Item Length Description | Ankle length |
| Item Type Name | Leggings |
| Leg Style | Skinny |
| Manufacturer | Thermajohn |
| Manufacturer Part Number | 00810121584026 |
| Material Type | Polyester Blend |
| Model Name | Thermajohn Long Johns |
| Number of Items | 1 |
| Occasion Type | Base Layer, Everyday, Pajamas, Skiing, Snowboarding |
| Origin | Imported |
| Pants Form Type | Leggings |
| Pattern | Solid |
| Pattern Style | Solid |
| Pocket Description | Utility Pocket |
| Product Care Instructions | Machine Wash |
| Rise Style | Mid Rise |
| Seasons | Winter |
| Sleeve Length Description | Sleeveless |
| Sport Type | Camping and Hiking, Snowboarding |
| Style Name | Branded Bottoms |
| Team Name | Branded Bottoms |
| UPC | 810121584026 |
| Unit Count | 1 Count |
| Waist Size | 32 Inches |
| Weave Type | Knit |
| character | Sports |
I**R
Kept your nuts warm.
I got this Thermal Underwear for the cold Colorado winter, and I'm happy I did- right fit, soft material, good comfort.
A**R
Comfortable, well constructed, great value
This is an excellent product. The material has just the right feel and weight to it -- not too thick or thin, not too hot or cool, stretchy but not overly so. The garment appears to be well constructed; the stitching is flawless as far as I can tell. I'm 5'9" 165 lbs and size medium fits perfectly. Extremely comfortable and the price is definitely right. Highly recommended.
G**N
Soft, warm, snug and true to size. Solid purchase!
I really like this as a base layer. It’s nice and soft, and the fit isn’t too bad. It’s a tad bit loose around the waist and since there’s no draw string to tighten it, it slides a little throughout the day. The only real reason I give it a 4/5 starts is because not even a full day went by before the inside seam stitch came apart and left a hole near the middle of my thigh.
T**M
Light, but effective.
Even though it's Florida, it gets cold some days on the water If the temps are down, I wear these under my pants and stay warm on the boat.
B**Y
Great Fit, Quality Fabric that Feels High Tech
I'm about 5'8", 185 lbs. I wear a size 36-38 waist (closer to 38). I ordered a size Large. These thermal underwear have a "high tech" feel to them, they make me feel like an astronaut with access to premium space-age fabric. I say this because of how flexible the fabric seems to be, it kind of adjusts itself, molds itself, to my body. It fits me perfect at the waist, yet when I tug on the waistband, it easily stretches to where I think that I can probably gain 25-30 pounds and still be able to comfortable wear these leggings. Length-wise, the ankle bottom part has this same elastic trait, to where I think that somebody a few inches taller than me would fit into these leggings just fine. The stitching is uniform and looks strong, and they come with a printed on tag, which is convenient and eliminates discomfort or having to remove it yourself. The crotch area of the pants has reinforced stitching. See photos. These underwear seem like they will withstand accidental wear/use just fine. For example, I don't have to be worried about easily ripping them due to stretching too much, or snagging them on a cabinet knob. Despite the size/fitting guide suggesting that I order XL-2XL, Large fit me just fine with plenty of room to grow. I would recommend somebody up to about 5'10", 200lbs to go with the large, however, due so at your own discretion. Finally, referencing my uploaded photos, the sun was hitting these leggings, making them seem like they are lighter in color than they actually are. Have no fear, these leggins are jet black as advertised.
A**N
Nice Long John’s
I got these for my grandson for when he’s at work. He’s unloading UPS trucks all day in this cold weather. I asked him what he thought about the long John’s. He said they are the best and most comfortable long John’s he’s ever worn and the only kind he will buy from now on. He likes to work in jogging pants. He said these long John’s keep the cold air away from his legs. I’m going to get him a few more pairs if they mark them down again. I’m not going to pay $20.00 for them. I just feel like they are over priced. But that’s just me. I’ve washed this pair for him every other night since November. That’s two months. They still look as they did the day we received them. So you can feel safe about throwing them in the washer and dryer. I hope my review helped someone who’s considering purchasing them.
M**A
Highly recommend
Amazing thermals..... Cold wind cuts through my pants but stops at the thermals..... I recommend for those working or spending some commuting time out in the cold
B**Y
Too tight in waist. Too loose around ankles.
Meh. I ordered these because the ‘unbranded’ version that I’ve ordered before was out of stock. These are tighter in the waist — a bit too small for comfort. And they’re also looser in the ankles, so don’t grab — though my socks pulled over keep the bottoms in place. But they’re too tight for comfort.
P**O
No muy buena calidad'precio
Terminado mal hecho y no entallado bien
A**A
Cumple con las especificaciones
Llegó en el tiempo esperado y cumple con las especificaciones.
M**L
Me gusto
Esta muy padre
G**S
Muy buenos
Cómodos y excelente calidad precio
F**D
Super cómodo y muy caliente.
Lo usé para ir a esquiar y funcionó perfecto.
Trustpilot
1 month ago
5 days ago