- Thermal Underwear for Men Long Johns Set Fleece Lined Winter Cold Weather

I grabbed these WEERTI thermal long johns for cold days and they’ve honestly become my default base layer once the temps drop. The inside fleece is very soft and cozy, and the fabric has enough stretch that I can move around, bend, and sit without feeling restricted or like the seams are fighting me. They fit close to the body, more like a second skin, which helps keep warmth in, but it also means you may want to size up if you’re between sizes or don’t like anything too tight. I’ve worn them under jeans and work pants outside and also just as loungewear at home, and they’ve kept me warm without getting overly sweaty thanks to the moisture‑wicking fabric. ​ They’re not perfect, though. The waistband and cuffs can feel a little snug after a full day, and if you run hot or spend a lot of time indoors, you might find yourself getting warmer than you’d like. The material is synthetic, so if you’re used to merino wool base layers, this won’t feel as “premium,” but for the price it’s hard to complain. Overall, these are a solid, comfortable option for everyday winter wear, especially if you just need something dependable for walking the dog, commuting, or working outside in the cold. ​

A good item the quantity is one the color was black the thickness is thin and fits well under clothing it kept me warm in September I haven't worn it in winter yet!

I purchased these for a trip to Norway and they did a great job keeping the cold at bay. Highly recommended.

Product-wise, this underwear set fits the bill! Feels comfortable, the inner polyester material feels warm, fit great even under a pair of looser jeans (not so sure how they would fit under skinny jeans lol). Size-wise, definitely go at least one size SMALLER than you would normally get. I think the size chart is misprinted, I believe the waist size is listed as the chest size, which will definitely throw you off. I actually went two sizes down from a Medium to an Extra Small, because I wanted to make sure the top and bottom of the underwear set would hug closer to my skin for heat retention, and they don't feel too tight after the 1st couple of times wearing them! Price-wise, I think it's fairly reasonable for the quality and performance the underwear set provides, and compares to most of the long underwear sets I researched on Amazon. 4 out of 5 stars is my honest rating, and I would certainly buy another pair in the future.

Good quality , reasonably priced , very warm.

Bought for wintertime outdoors. I am 5 ft 7 inches and weigh 220 lbs. An XL pair fits well. Not too tight or loose or tall.

It’s been nearly a year since buying 3 pairs and I can confidently say that they have not ripped or torn during my training, work and adventures! I recommend these without hesitation! I purchased a pair of these so that I could layer up while I work outside in the winter months. I purchased the first pair around nov-dec of 2024. The first pair I bought in medium when I was around 210-220lbs. First impression were that it fit like a glove and felt unbelievably soft. The black color really doesn’t degrade or fade in wash and stains don’t tend to stick around, so washing is easy. I use these to work out too so I can move around with no issues in these and they don’t get too hot either while doing so. Now as for keeping me warm while outside at work, I really can’t say anything bad about these. In 10 degree (F) weather it kept me nice and toasty all shift long. They are quite durable too, as I do Muay Thai in these as well and they haven’t ripped or torn yet from the drills, although my first pair has stretched a bit and fits a bit loose. I have lost a good amount of weight so that’s not a big issue. The other two pairs that I bought after my weight loss fit nicely, but I might have to downsize to a small lol. In short, I really like these thermals. I wear them basically all the time in the winter for all sorts of occasions, even when it’s not cold. I’m mostly likely going to purchase a few more sets of these.

I bought this as a gift for my brother for his trip to Brazil. He really liked it! It was comfortable, warm, and fit well. He was very happy with it.

De buena calidad y cómodos.