WEERTI Thermal Underwear for Men Long Johns with Fleece Lined Base Layer Men Cold Weather Top Bottom
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FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Wednesday, May 6
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Size: XX-Large
Color: Black
Features
- 92% polyester/ 8% spandex
- Pull On closure
- [ALL-DAY COMFORTABLE WEARING EXPERIENCE]: Mens long johns thermal set made of 92% Soft Polyester / 8% Spandex blend super skin-touch fabric with fleece lined. Long johns for men fit snug like a second skin for minimizing heat loss, lightweight but warm, thermal underwear set gives you a sense of security throughout the winter.
- [STRONG MOISTURE WICKING]: Mens thermals top and bottom set is made of moisture wicking and breathable fabric, with wool thermal underwear men moisture transport system, wick away sweat fast to keep you dry and light, easily keep away from the clammy feeling. You can relax or brave the outdoors pursuing your active lifestyle at any time.
- [PERFECT DESIGN FOR MAN]:Mens long johns winter base layer perfect for use underneath formal or casual attire, or they can be worn as comfy pajamas on chilly nights. When going out to jogger, run, bike, dress up this set under your clothing to keep warm and cozy in cold climates or bad weather.
- [FLEXIBILITY FOR ANY MOVEMENT]: The 4-way stretch delivers full mobility and a squat proof design, its strong seams wont tear prematurely. Thermal underwear set gives you flexibility by hugging your body to move, youll feel a sense of freedom in all your activities, they will keep you warm without sacrificing your range of motion or comfort, whether shopping or leisure.
- [100% SATISFACTION GUARANTEE]: We promise these are the most comfortable long johns for men thermal sets you will ever own. If you don't love your thermal underwear set for any reason, let us know and we'll refund your money back or send you a replacement! That is how confident we are that you will love it!
Department : Mens
Date First Available : May 13, 2020
Department : mens
Date First Available : May 13, 2020
Manufacturer : WEERTI
Product Warranty: For warranty information about this product, please click here
Best Sellers Rank: #147 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1 in Men's Thermal Underwear Bottoms
#1 in Men's Thermal Underwear Bottoms:
Customer Reviews: 4.5 4.5 out of 5 stars (12,361)
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, May 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: XX-Large
Color: Black
These thermal underwear are fantastic. They’re soft, fleece-lined, and do a great job keeping warmth in without feeling bulky. My husband wears them to football games in cold weather and stays warm and comfortable the entire time. They fit well, layer easily under clothes, and hold up well after washing. Definitely a must-have for cold weather and outdoor events.
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Reviewed in the United States on December 15, 2025 by Samantha Lewise
Size: XX-Large
Color: Black
Got these for colder weather and wear under my clothing when walking/jogging outside in 10-30 F degree weather. After about a month and 7-8 uses and washes I am very impressed. They hold heat in great, good material and quality and after some washes they have not had the lent balls attach to it which is always a concern with this type of material. Has not shrank but it does run tight which is what I wanted, as I am 5' 10' 225 and decently muscular and bigger chest and got a XXL. Fit tight in a good way and I had no issues even weight lifting in these. I sweat a ton and these held the moisture and kept me warm when I hit the parking lot at 25 degrees and windy. I will be buying 2 more sets and rotate them so as not to wash this set to death. Very pleased with them, wish they were about $5 or more dollars cheaper as some others but assume they might not have the quality I find with these.
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Reviewed in the United States on December 15, 2025 by StonewallMU
Size: Large
Color: Black
These are great for sub-freezing temperatures. I just wore them to the Patriots game at Gillette stadium where we sat up on the 300's level in the freezing wind. There was a wintry mix with the temperatures dropping down to 15-20 degrees F during the 2nd half of the game, with the "Feels-Like" temperature of 0. That being said, I was super warm and even a little hot with these on as a base-layer. I would say the shirt was a little tight but the pants fit great - then again, as the base layer you don't want these to be loose or bulky, so that may be good. I'm 5'10 200 lbs and I got the Large size.
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Reviewed in the United States on December 15, 2025 by Sarath Mohan
Size: X-Large
Color: Black
Fits tight and is warm in thw 20 degree weather... Soft to ware
Reviewed in the United States on December 5, 2025 by Dave Bly
Size: Large
Color: Charcoal
I will say I was skeptical. It arrived shrink rapped and I thought no way would it be thick enough, but this material is the perfect bottom layer to keep warm in the cold. Im 180lbs 5'9" large is perfect. I will bring along a traditional pair of cotton long John's just incase I need another layer, but this will be my primary under layer to any winter outfit. They seem breathable. Although I am warm, I am not sweating.
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Reviewed in the United States on November 29, 2025 by Amazon Customer
Size: Large
Color: Navy
It comes in two parts. There's the bottom and the top. They are comfortable to wear, they provide ample warmth in single degree weather, and they flex when you move. The workmanship is top notch, I recommend washing them in cold water.
Reviewed in the United States on December 5, 2025 by Roger D.
Size: X-Large
Color: Black
I love these for cold homes or walks. These kept me comfortable during 20 degree hikes in the mountains. They are light and thin, easily fitting under any base layer. Highly recommend.
Reviewed in the United States on December 3, 2025 by K. V.
Size: 3X-Large
Color: Black
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.
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Reviewed in the United States on November 17, 2025 by MissLicious