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Stay warm and comfortable during the coldest months with the best long underwear for men. Designed for optimal insulation and moisture-wicking properties, these essentials provide the perfect base layer for any outdoor activity. Featuring soft, breathable fabrics and a snug fit, they ensure maximum mobility and comfort throughout the day. Whether you're skiing, hiking, or simply lounging at home, our collection offers a variety of styles to keep you cozy. Embrace the chill with confidence and enjoy the ultimate warmth and protection.
$19.99
WAS: $24.99*
60% combed ring spun cotton, 40% polyester fabric weight: 5. 25 oz. ... two- layer engineering traps air between layers providing a natural barrier of warmth tagless design and flat seams provide a smooth fit and extra comfort rib cuffs and drop tail for added protection against
5
LALO4U
This is great for people who work outside keeping you warm and comfortable
5
nickname111111
i get cold easily. this helps. thank you very much
5
Ore76
I purchased this also for my father and he just loves it.
$54.99
Perfect for layering under pants when working all day outside. ... Great fitting, warm layer option ... My husband said he liked them, they are quite heavy, heavier than we thought, but are very happy with the
5
MDV43
Comfortable. They fit full length. I am 6' 3. They did n't shrink when washed and they are just overall pretty awesome for thermals.
5
NancyG
These thermals fit well and keep me nice and toasty when I 'm outside.
5
Ppinner
I bought this product as Christmas present for my husband
5
MarcosD
These are baggier than most thermals but work great.
5
Jack sprat
Recent purchase, worn a few times. So much better than my old pair of thermals.
$47.98
WAS: $100.00*
Best cold weather geat ... Best baselayer yet. ... Works perfectly as a light undergarment for my scuba dive dry suit! ... This base layer fits quite well and adds noticeable warmth to my outdoor gear during the
5
Jeff1540
If you play cold weather golf you really need to get the UA Cold Gear product. I like it because it ’s flexible and fairly warm.
5
Prof13
My Under Armour- UA Base 4. 0 XL fits perfectly. The waiste band is comfortable. The fabric is a great barrier to the damp cold air near Lake Michigan as I watch my son ’s Zion Benton High School ’s Varsity baseball games.
5
MattB13
Very warm. Different than the old waffle style. But they still work just the same.
5
Amazing pair of pants
I work outside. And theses pants are amazing.
5
Great material. Fits like a glove. Perfect for cold weather. True to size.
$51.99
dry technology wicks sweat and dries fast rugged flex stretch technology is built to move odor- fighting technology ... force fast ... brushed elastic waistband with concealed stitching contoured front fly closure smooth flatlock seams reduce chafing tagless
5
Outdoor T
Best value for quality base layer pants, would highly recommend.
4
GodisGoodandKindForever
My teenage son wears these as Baselayers skiing and they are perfect for 20 degrees and up!
$36.38
WAS: $70.00*
Great gear to keep warm ... Excellent warm up leggings if you are working outside in the cold weather ... Fit is perfect and they will definitely keep you
5
Rickiuyv
I got a pair of this ones and i really like them specially to be worn under layers for extra cold days, good material and thin can be use with jeans.
5
Tawhid
This product has soft and comfortable fabric!
5
Proline1988
Whenever it's cold outside and I have to be out in the elements for extended periods I always wear UnderArmour products. Nithing words as good to help keep me warm. A bit pricey but we 'll worth the money.
5
Mf1969
Warm and comfortable sizing was good. Good on cold days for sure
5
Anne799
My son wears these under his uniform. He is so happy with the comfort and layering capabilities the material provides!
$33.73
WAS: $60.00*
fit fitted baselayer technology ua base™ 2. 0 active baselayer is lightweight, flexible, and breathable for high activity performance in cool conditions moisture transport system wicks sweat and dries quickly ua scent control prevents the growth of odor causing microbes to keep you feeling fresh...
5
Micheile
Feels great keeps you warm
5
NHummingbird
Very comfortable and good for mild to moderate cold weather. I would recommend
5
Brian31
This 2. 0 is comfortable and warm. Perfect baselayer to shred the slopes with. Wicks moisture as advertised. Awesome shirt
5
Jeff H 150
Great fit and very comfortable. Very warm when out in the elements but not too hot while working inside. Would definitely buy another one.
5
Kpax1
This base layer is warm, comfortable and lightweight.
$30.00
performance fit pants brushed interior fabric offers all- day comfort and warmth body contouring design for great shape tag- free design provides a fuss- free
$36.00
quad- blend fabric technology allows heat retention to keep you warm ... relaxed fit pants ultra- soft brushed interior offers all- day comfort and warmth true comfort stretch for ease of movement non- deforming design helps hold the shape tag- free design provides a fuss- free
$47.98
WAS: $100.00*
I wear these for while working outside, and they do a great job of keeping me warm while I ’ m doing light work. ... I was amazed how warm and comfortable this
5
Fits like a glove, great material, true sizing.
5
SK719
Keep me warm while doing ice rescue training
5
JohnG111
Absolutely amazing- wore on single digit weather and only my hands and feet were cold
5
Dh2207
I bought these for my boyfriend who is an avid hunter and Lineman, he loves them! They keep him warm without getting sweaty!
5
Jm6990
I don ’ t like wearing a coat in Wisconsin. I wanted a solution that provided warmth while still fitting my aesthetic. This base layer 4. 0 has been perfect for me. It ’s fitted, not bulky and makes a huge difference in keeping my chest and arms warm with just a long sleeve on top of it. I recommend!
$44.99
crewneck long sleeves concealed thumb loops hold the sleeves in place mid- weight polyester and wool blend keeps you warm and regulates temperature smooth flatlock seams reduce chafing tagless
5
AnthonyV
Very comfortable and warm, while also lightweight, perfect for a few days on the slopes!
5
Denise
[ Keeps my husband warm when he works outside! Will purchase more
5
SOCORROV
They are a Christmas gift but the material is awesome.
5
ArturoR
It is amazing, kept me warm when the tempt dropped to 17°F
5
Slim67
Lightweight, soft and warm, just what is need from a base layer
$39.99
WAS: $44.99*
outside layer: 70% polyester/ 30% merino wool ... pruf® technical fiber polyester with silvadur™ intelligent freshness ... inside layer: 100% cold ... rib cuffs drop tail for added protection against cold regular
$49.99
My husband needed a new pair of long underwear for work, and he loves them. ... the best thing a man could wear in the winter and around the house plus when being in a hotel and holidays the winter support is great becuse things move
5
Michael prez
Great product. just as described. fast shipping and fairly priced
5
JeannineR
These are great, its the second pair I have bought for my husband. He works in a freezer all night long and these are great and really help to keep him warm.
5
Madison L Green
Bought right before it started getting super cold and so glad I did!
5
Mscole12
Bought for husband…Good fit, comfortable fabric, decent price.
5
DennisR
These fit great and feel soft. Keep me warm all winter long
$36.00
relaxed fit long sleeve shirt ultra- soft brushed interior offers all- day comfort and warmth true comfort stretch for ease of movement non- deforming design helps hold the shape tag- free design provides a fuss- free wear crew neckline allows for a snug, comfortable
$159.99
I like to exercise outside all year long and got tired of cold legs. ... The warmth is good for me ... I usually love blasting the AC and can still wear these pants for the perfect
5
Ashley
I bought these for my husband as his job requires him to be outside in cold temperatures and they were worth every dollar spent. I highly recommend everything this company has to offer 😊
5
Crystal
Worked great! Downside is, I can ’ t use normal base layers now.
5
Jay Maine
I purchased these for hunting. They worked great!!!
5
DandySandy
I like these but the heat is only in one area and I wish it covered more areas
5
Keith B
I have n't turned them on yet but the fit is perfect.
$44.99
I bought these so I may continue playing golf in the colder weather. ... Keep Warm ... Wore these under snow pants in- 10 weather for ice fishing and they worked
5
ThomasL
This base layer has been great in cold weather. They perform well enough that I do n't notice I am wearing them while working.
5
JamesY
They fit great and keep me nice and warm working outside in the wind all day.
5
Lando523
Wore these under snow pants in- 10 weather for ice fishing and they worked awesome. Definitely buying them again in the future!
5
Tanner2
These base layer bottoms are great for cold weather. Carhartt products never disappoint.
5
GolfmanNJK
I bought these so I may continue playing golf in the colder weather. I ’ m pleased with the results.
$55.00
Best set I 've ever owned ... these compression tights were perfect for training sports, bought these for running and they sure do keep me warm on cooler mornings and
5
MamaToHayden
I purchased this for my boyfriend for Christmas and he loves it! He wears this for all his outdoor activities and he is never cold.
5
MamaChiTown5
True to size, comfortable. My son wears them while playing soccer.
5
Andrew E2
Got this gear to wear on those super cold days under the snow pants. They are thin and skin forming enough to not impact the fit of the boot along the lower leg( big deal for performance skiing) and warm enough to keep you on the mountain.
5
Ball pro
These leggings are comfortable to wear for everyday as well as sporting activities
5
Personal4
Great product for baseball and other sports. Works well I. Texas weather
$90.00
side seams help minimize chafing while wearing a pack and offer a body- enhancing fit. ... this top uses their lightest- weight merino fabric wrapped around a nylon core to increase durability, while still keeping the 100% soft, merino wool you love next to
$85.00
slim fit light weight merino jersey fabric uses a nylon core to increase durability while still keeping 100% merino wool next to skin fully functional fly merino- lined, 1. 5 ”( 4 cm) wide elastic waistband designed for maximum comfort flatlock seam construction designed to minimize chafing fit...
$45.00
fit& design form- fitting baselayer our cold weather compression fabric offers warmth and supportive stretch technology moisture- wicking fabric absorbs moisture to help keep you dry and comfortable 50+ uv
5
Slab26
These leggings do the trick to keep you warm and dry in the wintery seasons when outside exercise beckons…!!!
5
caracj
Kept my son warm in 7 degree weather on our ski trip!
5
Acalheel
Needed for a really cold day and it actually helped pad under my baseball pants
5
Mando298
I bought this for soccer and its very warm so 10/10!
5
KCKasey
I bought these for my son to wear when snowmobiling and he loves the comfortable fit. He said they are also very warm and fit nicely when layering.
$34.99
They are very warm and very reasonably priced! ... a good base layer is always important; cold ... pruf® men ’s expedition pant is ideal for keeping warm in extreme
5
Happy and I know it
5
Outdoor manly
Bought these on a whim to try out for working in the cold weather. I use them as a base Layer. They are very warm and very reasonably priced!
See Price in Cart
WAS: $155.00*
this bulk- free, 100% merino wool thermal layer brings a new dimension to active winter wear ... insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort during high- intensity
$47.98-$85.00
WAS: $85.00*
no matter the season or the activity, this base layer is made for it. ... Great quality, ordered for my husband for Christmas. ... He loved it.. would order
5
MAJB
Great quality, ordered for my husband for Christmas. He loved it... would order again.
$34.99
It is warm and comfortable. ... Very comfortable! ... LOVE❤️Love these things don ’ t sweat keeps me warm and dry makes me wan na cry reach for the sky ... Very warm More like a
5
Firelion
I bought this baselayer to use for my recent snowboarding trip. The weather was windy and 8 degrees each day. I already owned the baselayer pants which were military issued. This top was perfect. It kept me warm for 3 days. All I used was the baselayer and a hoodie with my ski shell over the top. Perfect setup all day long.
5
Mike2380
Nice warm shirt. Not too thick. Very comfortable!!!
5
MercManSniper2A
LOVE❤️Love these things don ’ t sweat keeps me warm and dry makes me wan na cry reach for the sky
5
LabDad
I have used ColdPruf gear for about 3 years. Living in the northeast it gets cold. These products can not be beat. I highly recommend them to everyone.
5
mal517
Very satisfied with this item. It is warm and comfortable.
$28.48
WAS: $60.00*
I bought the 2. 0 base layer a few years ago and they 're my go to long underwear for the extreme cold. ... Fantastic thermal underwear for snow sports. ... wear these daily for long days outdoor and they provide adequate
5
Tracey2020
These under armor thermals are a family favorite.
5
Mcdavid97
The base layer fit comfortably nice and snug. It kept me very warm as I was skating out in the cold winter weather.
5
Jdog523
I 've been wearing under my pants and they 've kept me warm during 0 degree weather
5
Avery111
These are great for my winter garage workouts. Slim layer fit really well under joggers. I always size up for tights and they fit nicely. Great amount of stretch, which I really need as a dancer.
5
LP25
Bought these for my husband and he loves them. He has a couple 3. 0 sets and has worm then for a least 6 years. They wear great.
$115.00
The best. ... My son loves wearing thermal bottoms for skiing. ... Solid base layer ... Keep me warm in the mornings as I 'm putting gear on, stays cool as I skin up the
5
Wesley on the Rocks
[ I highly recommend these for all of your snow adventures. I wear mine directly under my snow pants and they work perfectly for warmth and movement. This base layer helped me survive snowboarding in both Colorado and Canada. Buy a pair, its worth every penny!
5
Jordan
[ I ’ ve worn this pair of wool pants as a base layer a couple of times in the snow and stayed warm. They fit and feel great! I definitely recommend!
5
Joe1
[ Bought two pairs of these for a snow trip. Great feel and regulated temp perfect. Alternated the pairs and neither smelled after solid week+ of use.
5
Littlemisstexas
[ Purchased this for someone. They gave a thumbs up. I personally own a pair of women ’s smart wool. Money well spent. They last a long time, and they ’ re as comfortable as it gets.
5
Chris K
[ I bought this base layer bottom for a ski trip to Colorado. This did a great job keeping me warm in the cold mornings and wicking sweat away in the warmer afternoons.
See Price in Cart
WAS: $120.00*
merino sport yarn provides durability and fast dry times of polyester ... slim fit to follow contours of the body 3d mapping results in near custom fit and movement freedom seamlessly knit mesh ventilation designed to keep you dry and comfortable size medium inseam: 21. 5
$54.73-$115.00
WAS: $115.00*
the technical benefits of 100% merino wool will help you keep your game at a high level for longer. ... slim fit 100% merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance fit updated to improve functionality while...
5
Kwhendy
Bought these about a week ago and wear them nearly every day. I love how they keep me warm but do n't make me hot.
5
Mountain time
Fit great especially in length. Perfect weight to stay warm in cold weather.
5
tjflan2
Fit true and worked outstanding as base layer for football game. Very comfortable and breathable.
See Price in Cart
WAS: $115.00*
add one of smartwool's best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or
$90.00
Love the fit and breathability, a bit less wool and more synthetic than other brands I wear, but it works for me since this is a hiking base layer that I wear multiple times without washing- does n't get stretched out and dries
5
Gandhi
[ Bought for a hiking baselayer. Expensive but I think its worth it. More comfy in the cold than a synthetic baselayer. Not a compression shirt. I use under a fleece. Does n't smell after a full day of hiking.
5
Jackie28
[ This is my second purchase of a Smartwool Men's Classic All- Season Merino LS Base Layer- this is a great lighter weight item that breathes well but is warm enough when it gets cooler.
5
Rover Dog
[ I own several Smartwool tops but this is one of my favorites. The slightly heavier material is ideal for stand alone yet still layers nicely. Never bulky. Quality is what you would expect from Smartwool. Excellent.
5
Tony99
[ I have tried more than one brand of merino tops Keep coming back to smart wool for best quality and fit. They also keep their shape. The price is inline with other brands
5
Thunderbolt417
[ I 've long been an unabashed devotee of all Smartwool products but their base layers, like the classic all- season merino long sleeve shirt, is truly the best money can buy. Since my days of living in the frigid mountains of northern Utah, I 've discovered the breathability of Smartwool's all- season merino long sleeve base layer makes it both the perfect shirt for keeping warm on winter's coldest days as well as ideal workout apparel. Smartwool base layers also make the best all- season pajamas imaginable. The all- season merino long sleeve shirt feels like a gentle hug when you slip it on, and remains comfortable until you 've completed your workout — whether it be a 3- mile hike in the frigid cold or a home gym weight training session. Smartwool has long been the gold standard for merino wool apparel. When you purchase your first Smartwool product, you 'll understand why.
$125.00
relaxed fit made with four way stretch for unlimited movement moisture transfer fibers move moisture away from skin to keep you dry upf 30 protection clima- wool fabrics boast superb breathability and temperature regulation for a comfortable
$130.00
insulation, articulation and ventilation are seamlessly integrated to amplify movement and comfort during high- intensity activities ... slim fit merino sport yarn combines the power of merino with the durability and fast dry times of polyester seamlessly knit mesh ventilation designed to keep you...
$106.00
regular fit wind resistant soft, brushed fleece backing four way stretch gives you total freedom of movement durable smooth outer face for easy layering gusset eases movement and reduces seam bulk covered elastic waistband for added warmth& comfort no fly front upf 40
$45.00
The best base layer ... Nice and comfy, fit well, keeps me warm during softball games. ... Great fit- comfortable- warm ... Comfy ... I was never cold or hot whether I was standing, skiing, or riding up the
5
Eve1223
I bought it for my teenage son to wear during his freezing soccer days. Works wonders! It definitely keeps you warm.
5
randmwith2
Bought these for my son for soccer season, and they are perfect. Fit is great, not too heavy but just enough.
5
The Brodie
Purchased for a Friday night football game for high school player. He said the fit good and kept him warm.
5
jday72
Bought for my 5'11 '' son. They are longer in the leg than other compression tights which is nice. They helped to keep him warm during Track.
5
sikoran
Very happy with the thickness and how warm these were. As good as any base layer I have ever owned.
$56.98-$120.00
WAS: $120.00*
slim fit top contour the body heavy base layer top and best base layers for cold weather made with interlock knit for enhanced comfort offset shoulder and side seams to increase comfort and minimize chafing side seams wrap to front for body- enhancing fit temperature regulated:...
$125.00
smart ... machine wash ... itch- free, odor- resistant merino wool blend is also temperature regulating and moisture wicking polyester and stretch added for comfort and durability fleece lining reflective flat seaming elastic waistband with inner drawcord zip pocket at back waist slip pocket at...
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