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Your cart is empty.Conquer the cold with confidence by slipping into our premium Men's Heavyweight Thermal Underwear Bottoms, thoughtfully designed to provide you with unmatched warmth in even the most frigid conditions. Created from incredibly soft and luxuriously thick thermal fabric, these full-length bottoms offer exceptional insulation to ensure you stay comfortably warm.
David Niles
Reviewed in the United States on February 8, 2025
I liked all of it. They fit great, feel comfy, and definitely warm. Really glad I made this purchase. The price was awesome also!
Tony J
Reviewed in the United States on February 18, 2025
5'9" 320lbs the 2xl fits perfectly, is quite warm and very flexible. Most comfortable long johns I've ever had! Tested in -30° f weather in Minnesota.
wolfric
Reviewed in the United States on February 17, 2025
Finally, something that fits, well made, comfortable. Will buy another pair soon.
Paul H. Zaiser
Reviewed in the United States on January 9, 2025
The product was fine. I'm VERY disappointed in the ridiculous length of shipping time. I ordered it on December 7 and finally received it on January 9!! I'll use Ebay next time!
Melissa
Reviewed in the United States on January 29, 2025
Warm and comfy. True to size
wow
Reviewed in the United States on January 23, 2025
Appears to be a good product and it should work well.
Steph B
Reviewed in the United States on January 22, 2025
They fit him wonderful and keep him warm. Wish there was a higher cotton count but durable and works well is good also.I read reviews to get right size fitment, which ~Thank You~ to all the guys willing to comment about their build and how it fit them! My guy is around 200lbs and 6 foot and the large fit snug enough for under snug jeans but lose enough to be comfy and not binding.
Nelson T.
Reviewed in the United States on January 16, 2025
Comfortable, accurate size, and as warm as I hoped. I am 6 ft, 195 and bought a 36x32; there is a little room to spare and it stretches enough to be comfortable sitting down. Wore it under my work pants out in the January sub-freezing temps here in NJ and my legs never got cold. Took a little while to process and arrive. Only worn once and not certain of the quality yet. Looks good.
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