Best Men's Thermal Underwear Union Suits
Inside Layer: 100% Cotton; Outer Layer: 65% Cotton, 25% Merino Wool, 10% Nylon Outer Layer.
Reviews
Find Best Price at Amazon"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."
"Would definitely recommend for someone who needs thin, warm layers for working outside in the cold."
"Husband is in construction and works outdoors almost all year, right through the winter too in Northern Idaho."
"This duofold wool suit will keep you nice and warm in the winter, this is my forth pair."
"My husband works outside all year around and the winters can get very cold."
"They really should not be put into the dryer, but if you do, definitely put them on low or air dry!"
"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."
Made of premium 8 ounce fabric, Carhartt's midweight cotton union suit delivers total body warmth in one comfortable garment. 100% Cotton.
Reviews
Find Best Price at Amazon"Review of Red Large Regular Fit. I am slowly becoming a Carhartt fan across the board. The dryer has helped the fit in my favor, but still can reach top shelf things around the house without discomfort."
"He would have preferred a button up square flap, but I couldn't find anything in the product description to say what kind of opening there was in the back."
"I wish they made these for tall men."
"Carhartt is a great brand, and these are really great."
"It's a Union Suit, so it's made to be worn under clothing and is snug."
"Bought these for my husband to wear."
"Great product but only 3 stars b/c there is a flaw that is too annoying!"
"weird fitting and did not provide much warmth, had to further layer myself."
Machine Wash. Soft waffle thermal knit fabric.
Reviews
Find Best Price at Amazon"Fits perfect and loves them."
"Over the years, I purchased several Tops ... and several Bottoms (but NO complete "union suit")."
"I read a review where they mentioned the poop shoot was buttoned up in a way that is not as they use to be rendering it almost useless."
"Highly recommended seller!"
"I can’t say I’ve ever actually used the butt flap, but hell it’s nice to have one simply because it looks great style wise. Whether you are looking for a Onsie that is a bit different than what everyone else in the world is sporting OR if you simply want it for comfortable PJ’s, this is an awesome way to go and I definitely recommend it."
"Super warm and fits perfect."
"I bought the extra large (natural colored) size thinking that it'd be enough if it just fit ok in the important areas and kept me warm."
Best Men's Thermal Underwear Union Suits
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
Find Best Price at Amazon"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."
Best Surf, Skate & Street Thermal Underwear
Machine Wash. 200 gram reversible birds eye thermal.
Reviews
Find Best Price at Amazon"This is quite a nice thermal."
"Great quality, great price."
"He said he liked the thermal quality of the shirt which you don't get with the regular T shirts."
"The product is made of real good materials and it feels great even tho the product looks a little bit big in size s."
"This is a comfortable shirt and it is great for winter."
"My son loved this shirt."
"Good Quality."
Best Men's Thermal Underwear Tops
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
Find Best Price at Amazon"A solid 6 hrs and I wake a perfect."
"I bought this top to give as a gift and got the matching pants as well."
"It isn't the waffle-type thermal."
"The only reason I gave it a 4 and not 5star rating is because I ordered a white and a black in Amazon prime for about $17 each, on the box they both said $19.99..I went to reorder another black one and now they are $40..not sure if it's a mistake on Amazons behalf or not, but if the msrp is 19.99 then it should not be $40..and again it's only for the black one."
"I love the more expensive brands but due to cost, I refuse to wear them when i can put holes or rip them from work activities. I wouldn't sit in a tree stand with them if it were lower than 10 degrees without other protective clothing."
"Bought for my husband for layering."
"Totally different fit from the heavy weight Duofold shirt, I think it runs a little large."
"I don't know why so many people are stating that these tops run big and the sleeves are too short."
Best Men's Thermal Underwear Bottoms
60% Cotton/40% Polyester.
Reviews
Find Best Price at Amazon"These things work well in the sense that they keep you warm without overheating you during cold (sub zero Fahrenheit) climates, but they don't fit you that well in the area males would like the most support. It's not a bad purchase for the price, but if you want an all-in-one product, I'd spend the extra money to get maybe full or mostly synthetic thermal pants."
"These are great."
"These make a real difference in keeping my lower body warm."
"I like them enough that I bought three pairs afterwards.Maybe a bit smaller or tighter than I'd have preferred, but definitely better than OK."
"Tall and thin."
"Nice, soft, comfortable and warm for cool weather."
"I ordered based on the sizing chart and I think its a little small for my taste."
"These long johns not only fit well, but they insulate well!"