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WEERTI Thermal Underwear for Men Long Johns with Fleece Lined, Base Layer Men Cold Weather Top Bottom

  • Based on 10,686 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Feb 13
Order within 11 hours and 9 minutes
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Size: Large


Color: Charcoal


Department ‏ : ‎ mens


Date First Available ‏ : ‎ May 13, 2020


Manufacturer ‏ : ‎ WEERTI


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews


  • Warm and comfortable
Size: 4X-Large Color: Navy
My husband drives truck and rides sxs in the winter in the snow. He needed something a little thicker than what he had. UA brand. These aren't super thick but they are very warm. He is a large guy with a big bottom and these fit great. They are stretchy but don't slid down when he bends over to do chains or what ever. They are thicker than the UA brand and much warmer. He gets hot easy and he says they do not over heat him though. He thanks me for them every time he wears them. He is 6 foot tall wears a 3x shirt and 44x 33 pants, I Ordered the four x size (xxxxl) and they fit great without being too tight or too loose. I will buy again if/when these wear out. The stitching is good I didn't find any flubs. I have washed them a few times and dry on low/ultra low and haven't had any shrinkage problems. ... show more
Reviewed in the United States on December 31, 2023 by Judi, Boise Idaho

  • Almost too warm
Size: XX-Large Color: Black
I bought these to have something with me on a fishing trip to Alaska. Tried them on in the house in California in the A/C and after about half a minute I was sweating and uncomfortable. Soft, stretchy, and VERY warm. No doubt that they will perform perfectly in waders in the Alaskan cold.
Reviewed in the United States on June 23, 2024 by Thor Nielssen

  • Fabric is great, fit is...almost right.
Size: Large Color: Charcoal
Fabric is soft, smooth, and warm. Stretchy without being too flimsy. Outer layers go on smoothly over this without getting caught up. Holding up well so far through frequent use (wear every 3 to 4 days, rotate several similar base layer sets). Use as an indoor baselayer under jeans & a light pullover sweatshirt during winter (run heater less to save $, outdoor temps typically in the 20s-30s). I am 5'10", 150lbs, average build (Medium T-Shirts, just moved up from 32x32 to 34x32 jeans). I purchased a size LARGE but might should have gotten XL. The fit through most of the body is great, but arms and legs are a bit short (I have long arms, this is not uncommon). Overall a decent product for the price. ... show more
Reviewed in the United States on January 8, 2023 by M.S.

  • Warm & light.
Size: X-Large Color: Black
Nice product. Warm. Well made.
Reviewed in the United States on August 31, 2024 by Lisa Garbarino-Coburn

  • Very comfy
Size: Medium Color: Navy
I work in the fridge a lot so these undergarments are great. They're also great pajama's. I like how they feel and I sleep like a baby when I use them. Heck I even bought two more of these because of how much I like this. One of my favorite purchases I've done.
Reviewed in the United States on August 1, 2024 by Amazon Customer

  • Warm
Size: Medium Color: Black
Really warm, really breathable, wore every day in New Zealand…they are as comfortable as a regular t-shirt…and warm
Reviewed in the United States on June 3, 2024 by Chris

  • Excellent quality, immediately warm
Size: Medium Color: Grey
I've used these on my winter trip into West Virginia Mountains for a week and I use these whenever it's very cold weather around here at home because the heat never reaches my bedroom. These thermal undergarments do their job excellently. They are thick enough and very effective. I can walk around the house in only them, 5 minutes after shivering in my full clothes. One of my housemates is tiny and isn't experienced in dressing warm and I WILL be buying her a set, for the sake of not having to watch her shiver and ignore my advice. For people who don't know, typically artificial fabric is much more heat insulating than natural fabric with the acception of Wool, Cashmere, Down, etc of course. What I saying is when you see that a thick snug garment is made of Polyester, you know it will be warm, especially the way this is constructed. Be careful of cotton, the moment cotton becomes wet it will not hold your body heat against you anymore, it will sap it away actually. There is a saying that goes "Cotton Kills". It will cause you hypothermia when wet. Wool will not, etc. So stick with man-made warm clothing (Polyester filling puffer jackets, Acrylic, etc) or Wool/Cashmere/Down Feathers(Down Feathers must stay dry too though). Stay warm out there! Stay safe! ... show more
Reviewed in the United States on April 7, 2024 by Leconte

  • Top fits small
Size: Large Color: Black
I got a size large so they would fit loose. The bottoms fit perfectly but the top is small. Needs to be longer and bigger. I usually wear a medium in shirts and the large is a bit small. The material is awesome and they seem to keep me plenty warm. I would recommend them
Reviewed in the United States on February 24, 2024 by James Browne

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