WEERTI Thermal Underwear for Men Long Johns with Fleece Lined Base Layer Men Cold Weather Top Bottom
4.5 | 13,111 ratings
Price: 32.99
Last update: 02-24-2026
About this item
- All-Day Warmth: These long johns for men thermal lock in body heat for lasting warmth, keeping you comfortable through cold days as your reliable base layer all season long.
- Ultra-Soft Fleece: Made with premium fleece lining, this mens thermals top and bottom set provides a soft feel on the skin and lasting comfort from morning to night.
- Flexible Fit: Made with four-way stretch fabric, these long underwear mens deliver full mobility and comfort with no restriction or bunching, keeping you warm in all your activities.
- Dry Comfort Anywhere: These thermals for men are made of breathable fabric that quickly wicks away sweat and controls odor, keeping you dry and comfortable at home, office, gym, or outdoors.
- Layering Essential: This men's thermal underwear top and bottom set is a must-have base layer for cold weather. Layer under any outfit or wear as cozy pajamas for all-day warmth and comfort.
- Department : mens
- Date First Available : May 13, 2020
- Manufacturer : WEERTI
- ASIN : B088K2GKNX
- Best Sellers Rank:#114 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry)
- Men's Thermal Underwear Bottoms
- Customer Reviews:4.54.5 out of 5 stars(12,008)
Top reviews from the United States
- jaber waleed alsulaitiWarm, soft, and great fit for cold daysThese thermals are perfect for winter. The fleece lining is super soft and keeps you warm without feeling bulky. The fabric stretches nicely and fits comfortably under clothes. I wore them in cold weather and stayed warm all day. Great quality and value for the price — highly recommended for anyone who hates the cold!
- MagedGreat for cold weatherIt’s not too thick but it warms up really good and great quality. Really comfortable too . Great for cold days
- BrunoWorks Fine but Could Be BetterThe WEERTI thermal underwear keeps me warm enough for everyday use, but it’s not the softest material. It fits well and is lightweight, which is nice for layering. However, after a few washes, it started to lose some of its stretch and softness. Overall, it’s an okay option if you need basic thermal wear but not the most comfortable or durable.
- Adrian SanzWarm and comfortableKeeps you very warm without feeling bulky. Soft, stretchy, and perfect for cold work days. Great quality for the price.
- MissLiciousI'm so glad I ordered these!I live in warm tropical weather but went to an outdoor sporting event in Chicago. I thought it was really cold but others kept saying it was crisp.
I wore these under my jeans and a jersey and jacket. Considering thee are really thing and lightweight, I was warm! I honestly feel like these kept me in the game, so to speak. If I didn't have these on I'd probable left because it was cold. For the quality these were, they are definitely worth the cost. I've washed and dried them a few times and they have not shrunk, color has not faded and they honestly feel like they would survive a full winter season. - Amazon CustomerPerfect fit. Soft and warm to the skin.My husband love his thermal underwear, perfect fit.. material is soft to the skin. Highly recommend..
- John M.Excellent product and very comfortableI participate in a lot of outside author events, including some in very cold weather.
These aren't like your grandfathers' long johns.
Thin but really hold the heat.
Once you have them on for a few minutes you won't even know you are wearing them.
Kept me warm outside for an eight hour event last weekend. - DeanA fantastic pair of thermalsIt’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.