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Best Men's Thermal Underwear Tops

Duofold Men's Mid Weight Wicking Crew Neck Top
Here is your all-purpose everyday use thermal designed for warmth and comfort soft two-layer protection barrier, combined with a close-to-body fit and softness for superior comfort moisture control to stay dry and a tag free label all with comfort in mind. Flat lock seams to avoid irritation.
Reviews
"Inspired by a photo on the product page, I even tried wearing a buttoned collared shirt underneath one, and this looks great- the Duofold shirt looks like a lightweight sweater over the top and classes up nicely."
"Given my experiences in using this shirt for motorcycling, I expect this shirt will work great for doing outdoor work in the winter."
"This shirt and a rain layer will probably be good down to about 45 degrees if you have the long underwear and good socks on and of course any fabric pant."
"I've trusted Duofold products since I can remember, and I've hunted and fished, backpacked and camped, and skied and sledded as many of the 60 years I've been around on this planet."
"It was the old style thermal underwear waffle-weave (not sure if that's actually what it's called), so I was disappointed when I first saw the smooth, almost jersey t-shirt feel of this new shirt."
"It does get quite cold here in New England in the winter so I wanted a thermal long sleeved T-shirt for the bottom layer."
"I bought this top to give as a gift and got the matching pants as well."
"It isn't the waffle-type thermal."
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Carhartt Men's Base Force Wicking Cotton Super Cold Weather Crewneck Top
It partners up nicely with carhartt’s base force cotton super-cold weather bottom. 100% Cotton.
Reviews
"I love the Force tops."
"Definitely keeps me warm and the fit is as expected, BUT, the one thing that really bothers me is this - when I have it on, it's one of those shirts that feels like you have it on backwards."
"Great quality!"
"It fits well, quality made and very warm/body heat retaining."
"This is great."
"Great thermal just way too expensive."
"husband's loves these, keeps him nice and warm."
"For perfectly and super warm."
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ColdPruf Men's Basic Dual Layer Long Sleeve Crew Neck Base Layer Top
The BASIC 2 Layer garment has been engineered to trap air between the layers of fabric to provide a natural warmth shield to keep you warm and comfortable. 60% Combed Ring Spun Cotton/40% Polyester.
Reviews
"So naturally, I was a bit skeptical about the last line in the description for this latest venture: "THE BASIC - DELIVERS COMFORT AND WARMTH IN ALL COLD WEATHER ENVIRONMENTS - WHETHER AT HOME, ON THE JOB OR ENJOYING THE OUTDOORS." I wore the http://www.amazon.com/dp/B00EF1K3ZC under my jeans, and the ColdPruf top under an unlined hooded sweatshirt with just a jacket on the top. And the top kept my body so warm that I was sweating - sweating enough so the ColdPruf top AND the sweatshirt were both soaked, but even with the wet clothes, I still stayed warm."
"hubby hasn't taken this off in days."
"my husband is 6' 6" tall but slender and is a struggle to find him clothes that fit him right."
"Very light material you can see through it."
"Great stuff, I wear this base layer when riding my motorcycle in the cooler temps."
"Great base layer."
"Working so far."
"Fabric is too sparse to be an effective winter base layer."
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Best Men's Big & Tall Sleepwear

Hanes Men's Solid Knit Pant
Hanes - Mens Knit Sleep Pajama Pant, Comfortable Hanes Comfort Elastic Waistband, Drawstring Tie To Allow for a Perfect Fit, Button Fly, On Seam Pockets, Easy Care Fabric, Waist Size S = 28-30 M = 32-34 L = 36-38 XL = 40-42 2XL = 44-46 3XL = 48-50 4XL = 52-54 5XL = 56-58, Machine Wash Tumble Dry, 100% Cotton, Made in China, #40100. Relaxed cotton-blend pant featuring drawstring waistband, single-button fly, and side hand pockets.
Reviews
"SIMILARITIES. - All have pockets, button fly, and elastic waist band with drawstring tie. DIFFERENCES. - The Fruit of the Loom seems to have the most substantial waist band and fly construction, followed by Hanes and CYZ. However, the Fruit of the Loom bottoms did not shrink any more than the CYZ or Hanes after first washing and drying."
"edit/update: Alright, I don't know what's going on, but I got a pair of XXL (thinking this might resolve some of the issues I had with my XL pair) and they are ENTIRELY DIFFERENT. Hanes must have redesigned these pants or something, because my new pair didn't pill up with fuzzies all over them, and they were HUGE. Maybe this is a design distinction between the XL and XXL sizes or something, I don't know, but my XL pair was like leggings, and my XXL pair is like wearing a pair of Andre the Giant's yoga pants. Yeah, that's how much bigger my XXL pair were than my XL pair."
"They are long in the legs and big in the waist. The elastic waist by itself keeps them fitting perfectly without being too tight. Other than the length being slightly long they fit me perfectly at the waist. So just get the right size, know that the length will be a little long unless you are very tall and these may be great for you too."
"I'd give these pants five stars, but they do attract more than their share of lint and animal fur."
"The crotch sags on itself and there is so much extra fabric between my waist and the beginning of the inseam, I could fit six people in there. These pants fit terribly."
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Best Men's Thermal Underwear Bottoms

Duofold Men's Mid-Weight Wicking Thermal Pant
Classic 2-ply cotton-rich thermal underwear. 60% Cotton/40% Polyester.
Reviews
"I look at box and their medium size was smaller than the medium size on Amazon."
"I work in the cold every day and these really make the difference."
"I bought some duofold shirts and they shrank a bit. Overall very warm and light weight, even under your shirt or pants."
"These long undies look great and feel great."
"They fir perfectly, they're well made and no major shrinkage when washed."
"I like these, the fabric is soft which makes them comfortable, but beware, these are not to be use in a really cold environment, you'll be good if you're going to be in a mild cold otherwise these are not as warm as you might think."
"Nice, soft, comfortable and warm for cool weather."
"Im 5' 8" with 31" or 32” waist, 175 +/- 5 lbs."
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Best Men's Thermal Underwear Union Suits

Duofold Men's Mid Weight Double-Layer Thermal Union Suit
Duofold originals created the base layer category with the first bi-ply thermals soft cotton against the skin and paired with the natural warmth of merino wool for superior thermal insulation, perfect for a wide range of low-impact activities. Inside Layer: 100% Cotton; Outer Layer: 65% Cotton, 25% Merino Wool, 10% Nylon Outer Layer.
Reviews
"There is no sizing chart provided for this union suit, so I will spare you the agony I had to go through ordering the wrong size: Men's Sizes: Small: Chest 34"-36". Pants/Waist: 29"-30". Medium: Chest 38"-40". Pants/Waist: 32"-34". Large: Chest 42"-44". Pants/Waist: 36"-38". X-Large: Chest 46"-48". Pants/Waist: 40"-42". 2X-Large: Chest 50"-52". Pants/Waist: 44"-46". This info came off the package itself."
"My husband works outside all year around and the winters can get very cold."
"I have had my original pair for two years and worn every single day in the cold weather. And if my boys leave it a tad too long in the dryer (ahem) that solved that."
"UPDATE: My husband has worn these pretty much everyday during 2 long Oklahoma winters and around the house as jammies."
"They seemed a bit large when I opened them, but after washing them, they shrunk just enough to fit right, and have not shrunk further."
"A bit large but otherwise fine as it shrinks a little during the first wash or two."
"First "union suit" I have ever had so I don't really know how to judge it."
"These are the perfect thermals."
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