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❄️ Warmth that works as hard as you do!
Thermajohn Long Johns Thermal Underwear for Men offers a premium fleece-lined base layer crafted from 92% polyester and 8% spandex. Designed for cold weather, it delivers superior heat retention without bulk, advanced moisture-wicking to keep you dry, and 4-way stretch for unrestricted movement. Perfect for layering or lounging, this lightweight yet durable set maintains its softness and fit after multiple washes, making it a must-have for any winter wardrobe.



















| ASIN | B019EEJX9Q |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Best Sellers Rank | #158,086 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #101 in Men's Thermal Underwear |
| Brand Name | Thermajohn |
| Care instructions | Machine Wash |
| Collection Name | Winter |
| Color | White |
| Customer Reviews | 4.6 out of 5 stars 18,585 Reviews |
| Fabric Type | 92% Polyester, 8% Spandex |
| Fabric type | 92% Polyester, 8% Spandex |
| Fit Type | Stretch |
| Global Trade Identification Number | 00810000410491 |
| Import Designation | Imported |
| Item Type Name | Base Layer Set |
| Item Weight | 13 ounces |
| Manufacturer | Thermajohn |
| Manufacturer Part Number | LYSB019EEJX9Q-SPRTSEQIP |
| Material Type | Polyester |
| Neck Style | Crew Neck |
| Origin | Imported |
| Package Quantity | 1 |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Size | Small |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Crewneck Set |
| Style Number | J-t-m-1836 |
| UPC | 810000410491 |
| Unit Count | 1 Count |
E**S
Warmth Without the Bulk
Warmth Without the Bulk This Thermajohn thermal underwear set has been an excellent base layer for cold weather. The fleece lining feels soft and adds a good layer of insulation without being too thick or heavy. I wore it under jeans and a hoodie on a chilly morning walk, and it kept me comfortably warm without overheating once I was moving around. The material has just enough stretch to allow easy movement, and the fit feels true to size for an XL—snug but not restrictive. What I especially like is that the set is lightweight yet traps warmth well, so it doesn’t feel like I’m bundled up. The fabric also seems to wick away sweat decently, which helps keep things comfortable if you’re active outdoors. After a wash cycle, it held its shape and softness, no pilling or shrinking noted. Something to keep in mind is that while this works great as a base layer, it’s not intended to be worn on its own in really cold temps—you’ll still want an outer layer. Also, the top is a bit longer, which helps keep it tucked in but may feel extra for some. Bottom line: A reliable, comfortable, and warm thermal set that’s perfect as a base layer for cold weather activities or just keeping cozy indoors.
J**.
Love these
Super comfy and warm, love these
T**S
A Great Way to Stay Warm in Cold Weather
Thermajohn Long Johns Thermal Underwear is a great way to stay warm in cold weather. It's made of a soft, comfortable fabric that is also very warm. The long johns are made of a blend of polyester and wool, which makes them both warm and breathable. They also have a snug fit that helps to trap heat. I've been wearing Thermajohn Long Johns Thermal Underwear for a few weeks now and I'm really impressed with them. They're very comfortable to wear, and they've kept me warm even in the coldest weather. Pros: Warm and comfortable Breathable Snug fit Durable Machine-washable Cons: None that I've found Overall: Thermajohn Long Johns Thermal Underwear is a great way to stay warm in cold weather. They're comfortable, warm, and durable. I highly recommend them. Here are some additional thoughts: I like that the long johns are made of a blend of polyester and wool. This makes them both warm and breathable, which is important for me in cold weather. I'm also impressed with the snug fit of the long johns. They help to trap heat, which keeps me warm. I'm also glad that the long johns are machine-washable. This makes it easy to keep them clean. Overall, I'm very happy with Thermajohn Long Johns Thermal Underwear. They're a great way to stay warm in cold weather, and I highly recommend them.
K**S
Good value for what they are.
As the owner of an Akita who is virtually weatherproof and likes his two walks a day. And as an interior trim carpenter who is often working an environment where I'm out in the cold, and then warmth of inside as a continuous cycle my search for the perfect thermal continues. The two keys to staying warm in cold weather is preventing air infiltration, while not dressing so warm that activity causes you to sweat. First, the good things. Both the top and bottoms are very comfortable. Although "large" was recommended, I went with medium and both the top and the bottom fit like a second skin. No bunching, they move with my body and I notice no creep in the material. Both garments appear well made, labeling is printed (a HUGE plus in my opinion) and very soft feeling. I'm confident that once I just wear them, instead of paying attention to their warmth purpose I'll forget I have them on. At rest, in the warmth of a heated house, they will not overheat you which can be a downside to some thermals in my experience. Now to the purpose. Warmth. This morning temp is 40 (f) with a "feels like" of 35. Light NW breeze. On our morning walk (more of a stroll, since the pup is getting up in years these days) I wouldn't call myself warm, per se, but comfortably cool. I estimate the bottoms will probably hold my warmth down to an outside temp of about 30 (f) but not much colder than that. Having said that, under moderate to vigorous exercise/work I'm sure they'll perform better. The top kept my torso (core) warm, with a cotton long sleeve over it, and then a regular shirt over that (and a medium weight jacket over that). Legs with just the base layer and a pair of cargo pants over, I could feel air infiltration. Not bad for what these are - a thin base layer. Though, not as good as some other thermals I've had (and am having a hard time finding again, bought them as military suplus). I'm going to be keeping these, they'll work on days like this. I can also see these as being a good choice on days that start out in the 30's and end in the upper 50's without overheating. The only reason I gave them 4 stars is because they still aren't quite what I'm looking for - which is a thermal that will perform well into the 20's with minimal overheating inside.
C**.
Great product!
Got these for my son as a Christmas present since he works outside doing construction. He absolutely loved them. Said they were very warm but not to the point of sweating and a comfortable fit that moved freely with motion without binding.
L**9
Warm, Comfortable, and Great Fit
These thermals are soft, warm, and very comfortable to wear during cold weather. The fabric feels high quality and keeps in heat without feeling bulky. They fit snugly under clothes and move easily without restriction. They also wash well and keep their shape after multiple uses.
E**N
A very Good product
These are very good exactly what I wanted
M**L
Good windproof base layer would recommend
Very good base layer windproof fits like a glove
C**N
Llegaron tallas diferentes
Pedí dos y uno me llegó correcto y el otro mal necesito devolverlo
K**S
Ok, but I don’t feel it’s a true thermal.
Very comfortable and you should definitely buy at least one size bigger then what you normally wear as they are cut small. In terms of warmth, I would say it’s not as warm as some other thermals I have had in the past.
C**E
Thermal Insulation top and bottom
This product was given as a Christmas gift, the receiver love the way it fits. It was a good buy.6
A**R
Good quality material.
Thick material, seems good for winter. nice soft material, luv it.
J**E
Ropa térmica.
Se compro como regalo, quién la recibió le gusto por la calidad de la tela.
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