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Stay warm and stylish with our collection of thermal shirts, designed for ultimate comfort and insulation. Perfect for layering or wearing on their own, these shirts feature soft, breathable fabrics that trap heat while allowing for easy movement. Ideal for outdoor activities or cozy days indoors, our thermal shirts come in various styles and fits to suit your personal taste. Embrace the chill without sacrificing style, and enjoy the perfect blend of functionality and fashion in every piece. Upgrade your cold-weather wardrobe today!
$63.97
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!
$51.97
WAS: $70.00*
Great shirt for layering clothing to keep you warm in the colder months. ... I bought this last month for snowboarding and it has been great usually nothing keeps me
5
NonaElk
As expected wonderful. It ’s my third one
5
Rtin93
Great material fits really well Definitely going to be useful when worn during colder weather and feel like going for a run at the time
5
BiaE
Really warm underlayer. Used to ski on freezing temp and this plus good ski jacket was enough… even when it was snowing… The only thing is that it feels way different then the 2. 0 shirt. I also have one of that and the 3. 0 is more stiff and feels smaller. Specially in the neck and chest.
5
mrsguzzie
I purchased this Base Layer 3 shirt when I visited our local outlet store to place an order for another Under Armour shirt I liked. This shirt is thicker than a normal under layer shirt but is still comfortable if you wanted to wear additional layers. The cut of the shirt is super nice you might not want to hide it, though! It has thumb hole openings which are nice. I wore it alone several times since I bought it and was pleased at how well it kept me warm. I liked it so much I went to get a second one. They had sold out of the 3s but I snagged a 2 at least! My only negative comment would be it looks wrinkled when you remove it from the dryer. I only air dried it so maybe some heat might have gotten the wrinkles out. It's black so not that noticeable. Great shirt. I tried to get a 2nd one so obviously am happy with my purchase!
5
Stacy321
My husband has a few base layers and he loves them. I love the women's cut/size. It fits well and is super warm
$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.
$19.99
WAS: $24.99*
pruf ... country of origin: imported brand: cold ... warmth is so basic two- layer fabric engineering traps warm air between layers fabric weight: 5. 25 oz fiber content: both layers- 60% cotton/ 40% polyester crew neck set- in long sleeves flat seams to prevent chaffing tagless
5
DreaV
Keeps me warm, does n't ride up( great fit) and super soft!
$55.00
This shirt is great for wearing as a base layer or on its own. ... I bought this as an undershirt for my son to wear under his uniform and it kept him plenty
5
dmitch1989
used it for my sons baseball game kept me very warm good material
5
Roxtar
My daughter loves this when she plays golf and its cold
5
brother shoes
I wore this cold Gear due to our cold spring soccer games and it kept me warm.
5
Danielle Harris
The quality of product was great. The fit of item was accurate according to description.
5
Guido10
Daughter got this for her game in 22 degree weather and was good!
$75.97-$120.00
WAS: $120.00*
The softness and temperature regulation make this my favorite baselayer. ... I am so glad that SmartWool has decided to offer plus- size clothing for women and I hope they expand with even more
$51.99
dry technology wicks sweat and dries fast rugged flex stretch technology is built to move odor- fighting technology ... force fast ... crewneck long sleeves concealed thumb loop holds the sleeves in place strategic paneling provides breathability smooth flatlock seams reduce chafing tagless label...
5
Ecko
It's a great fit i will get another one but this time in medium size. It's a hit& miss on my end.
$43.97
WAS: $70.00*
These thermals fit great, feel awesome and meet all my expectations in function. ... Perfect for winter ... I work snow removal and this was perfect to wear. ... Warm and
5
JTBo
Excellent product…very warm
5
Base 3
Great feel true to size while being slightly snug which I prefer!
5
Kar1388
Super comfortable and snug fit. Perfect for cold weather
5
HB1153
I was pleasantly surprised by how warm this base layer really is. It made all the difference during outside chores this winter.
5
Proline1988
I work outside all year round minimum 8 hrs a day. I 've tried many different brands of long John's but nothing beats Under Armour Cold gear 3. 0. Keeps me warm and dry. Very comfortable to wear. Cost more than the traditional long johns but well worth it. I definitely recommend this product.
$50.00
normal fit, nice bright aqua color, very comfortable! ... Bought this shirt about 3 week ago very comfortable soft fit really well ... Great fit, light weight, warm&
5
Lakasto
I love my new top. It is warm and easy to wear when I work out.
5
Bumblebea
I bought this a few weeks ago and the material is really soft and keeps your warm! Love the colors, I got green
5
JSSQFoley
this crew is amazing- comfy, warm, the material just melts on you. fits boxy which i like. def recommend it.
5
KMG411
Thin warm base layer. Great for outdoor training in the winter
5
Ne ce
I bought this a month ago and it ’s a great shirt very soft
$62.00
This shirt is made with such a nice soft material! ... Love the feel of the fabric. ... Comfy ... Soft and warm ... Material is super soft. ... This shirt is true to size and
5
MemaJo
Will not likely wear before the fall season, but it seems perfect for skiing- light fabric for packing, but plenty of thermal warmth. The color was lovely too- subtle rose!![ for layering... sleeves were not super long, so not need to stuff under your jacket.] Would also come in handy alone for fall golf! Also a great name for teens- I got one for my 16 yo granddaughter as well.
5
CowboysforGolf
I purchased this for my wife and she loved the quality and how the material feels.
5
KSC41
I have bought several of these and wore them all winter and even on my trip to Europe and Switzerland and daily on the farm. They are warm and cozy and very comfortable to layer.
5
Stephhr71
Very soft and comfortable. Fits true to size. Recommend for those chilly mornings for your workout.
5
Farmgirl56
I purchased this for myself with a Christmas gift card. I love the fit and the weight( medium)
$41.99
fit feminine fit, long- sleeve t- shirt durable, ribbed neckline style and team spirit screen- printed team graphics additional details officially licensed
$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
$39.99-$41.99
silvadur™ intelligent freshness controls odors and bacteria growth, and the top wicks away moisture to keep you dry and focused. ... the raglan sleeves offer full mobility and the drop tail hem adds coverage at the back so you can move with
5
Figarohall
I wore this to the Eagles playoff game and I was very warm and comfortable
5
Bthehostess
My daughter is really picky with fabrics that touch her skin. We needed compression shirts to wear under her soccer jersey this winter. She absolutely loves these compression shirts. A little pricey but def worth it. We will be purchasing a few more for her.
$159.99
Quick delivery, charges great, and heats up quickly. ... He was very impressed with the smaller flat battery. ... It keeps me so warm and cozy and I couldn ’ t imagine life without it
5
Renee
You don ’ t realize how much you need a heated base layer until you have one! It ’s been such a benefit to various aspects of my life. I wear it beneath my layers when spending time outdoors during winter in Wisconsin. But I ’ ve also worn it to work( in an office) during especially cold days. It fits true to size and is comfy. Somehow it seems to trap heat inside yet it ’s also breathable, I don ’ t sweat in it like I have with other base layers.
5
The Base Layer Shirt takes the bite out of any cold day! And the battery last for hours! Washed it in a cold wash then hung it to dry, easy peesey! Definitely worth it!
5
I bought the base layer for my son who works at Disneyland in Anaheim Ca. and he loves it. Keeps hos 3X body warm when working nights. Great product
5
GLWS
Just wearing the shirt and not on has been enough to keep me warm. The few times I have used the heat, I set it on lthe lowest setting and was plenty warm.
5
Luke B
Definitely worth having extra battery banks if you ’ re skiing all day or anything like that, also could use an extra hole in the battery pouch so you can route the cable to a pant pocket more easily. Besides that, it definitely lasts through the wash and multiple winters
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WAS: $115.00*
# Sweepstakes After having their all season or originally 150 merino clothing, this thermal merino is perfect for those cold morning runs. ... This shirt was so soft and
5
Patches
[ Needed a thicker base layer for skiing on those colder days. Perfect addition.
5
Captain Jimmy
[ This base layer is really comfortable. It is warm and does not restrict movement. I wish I had found this earlier. Fit is true to size. I 'm not sure why anyone would not be happy with this- buy it!
5
Jbear
[ Merino is THE stuff for active comfort in the cold. The key is staying dry between rain, snow, and sweat... it's challenging. 100%( 95 and 88 also good) merino helps to achieve this goal. It's warm when you need it to be and water( all types) evaporates quickly to keep you from getting chilled from damp clothing. It's got to be part of a system though, and you have to use that system properly or you will get damp and cold. We just came back from five nights in our tent@ an avg. of 26F at night. After hiking all day in these and then, putting on fresh Smartwool tops and bottoms we were warm all night( we could have stayed in the same set if we had to). Medium weight is probably fine for most applications, but do be sure you 've got the right system for the conditions. In summer and spring it's less critical, but in winter( THE best time IMO)... having the wrong gear can make for a miserable experience... and a dangerous one. Smartwool has the added benefit of being able to go in the dryer at home... not all merino products can. That's my take.
5
JKNOR
[ When it comes to staying warm during the winter, base layers are KEY! My old Smartwool long- sleeve lasted me years of use. Loved my first one so much that when it came to finally replace it, it was a no brainer. Kept me comfortable and warm during winter months of New Zealand, Japan, all the way to the summit of Mauna Kea. I 've never had a base layer fit so good right off the shelf. Felt like it I was putting on my favorite tshit. Could n't recommend it more
5
Sheri
[ My son loved the wool sweater I bought him for Christmas. It was soft and warm at same time. Mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
$49.99
quick dry lightweight flexible and durable crew neckline construction: comfortable neck opening that keeps shirt in place during running, training or lifting
$49.99
crewneck fits closest to your body for a comfortable fit fits next- to- skin but never restrictive smooth flatlock seams enhance comfort concealed thumb
5
KellyOP
I bought two of these to wear under my scrubs for work. I was a lot warmer then without. I also wear these walking the dog. They are worth the price.
5
nan2
[ I bought this as a gift for my daughter who loves to snow ski. She was skiing in 6° weather and it helped keep her warm. She said she loves it.
$39.99
machine washer and dryer friendly ... upf 50+ protects from the sun ’s harmful rays antimicrobial fabric fends off moisture and bacteria ... regular fit shirt unisex design constructed with therma midweight soft touch fabric 4- way stretch material flatlock stitching drop hem tapered design in...
5
ATLMiddy
I bought this for my daughter so she can stay warm in winter
$28.97-$44.99
WAS: $44.99*
I received the Base Force Midweight Tech Crew Thermals as part of a Carhartt Crew field test and I'am so happy I did because I love these thermals! ... I feel the shirt is true to size for a thermal so its a snug
5
glasgirl65
Shirts are well made and comfortable. But I preferred the ones from the previous season. Not crazy about elastic thumb bands, they dig into thumb webbing on your hand. They were much more comfortable with the slash cuff thumb hole
5
Cupcake
[ I am 5 foot and have a lot of trouble finding regular small sizes( other than petite) that fit well in the length. This long sleeve is just right
5
MehganM
Love the deep purple, top base layer! It fit really well and was long enough despite my 5' 11 '' height. If you are a C cup or bigger, you might want to size up, but for anything smaller it should work. It's odd that this was long enough but the matching pants are not as I 'm very proportional. In any event, I 'm grateful to have this top and I love the feminine color! Thank you!
5
Katie
[ Bought one in wine and two in black. The wine fit perfectly but the two black ones were tight under the arm, so I returned them. Quality is terrific and it was well appreciated in the cold Montana winds last month.
5
Sesb2120
[ I purchased this shirt, and another in a different color, after having an earlier model. I ’ ve worn the shirts several times now and I ’ m very happy with them. I do think they run true to smallish in size so maybe order up a size.
$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.
$92.00
relaxed fit four way stretch for unlimited movement activated carbon enhances thermal regulation and odor blocking properties upf 30 protection moisture transfer fibers move moisture away from skin to keep you dry soft hand feel makes it easy to layer
5
Bevshaffer
[ Love this. I wore it under a ski jacket for snow skiing and it was super comfortable warm and fits great. I ’ m 5 ’ 2 ” and 140 pound and a medium fit great.
$41.00
this kids' thermal top is also knitted with mtf soft spun polyester fibers that transport moisture away from the skin to keep you warm, dry and
$85.00
stay warm on those chilly morning runs in this top. ... nike therma- fit technology helps manage your body ’s natural heat to help keep you warm in cold- weather conditions thumbholes let you extend your coverage and help hold the sleeves in place while you move collar stretches to add face...
$75.00
moisture transfer fibers move moisture away from the skin to keep you dry and comfortable built- in 4- way stretch allows for full range of movement in every direction activated carbon enhances thermal regulation and odor blocking properties upf 30 protection blocks the sun ’s...
$105.00
regular fit comfort active stretch seam construction seams set away from shoulder for added support zip through collar with interior wind flap for ultimate warmth moisture transfer fibers to wick away moisture from your skin thumbholes in sleeves to help keep sleeves in place 4- way stretch for...
$115.00
100% merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance ... garment weight: 236g( 8.
5
JSSK
[ Smartwool Merino lives up to its reputation. I would say top is true to size. Have not washed item yet, so caveat to be aware. Wish sleeves had thumb hold, but otherwise happy.
5
Epscad
[ Recently bought this Smartwool zip shirt. I love these shirts because they breathe well, fit well, and are not bulky. They keep in the warmth. I also order one size up because they shrink after several washes in the washer.
5
Agaa
[ Fits great, not itchy, very comfortable and breathable, warm and i like the color. It is consistent with Smartwool sizing. I usually wear M and it feels great!
5
Ada B
[ Just what I needed for a day of outdoor adventure. Warm and cozy baselayer for sub- zero days. Zips up my neck for extra warmth. Love the color as well.
5
NickName
[ Love the pattern and softness of this top. It ’s long enough to keep it from riding up over my ski pants. It is more fitted which is good to keep the warmth in and the pattern makes it cute enough to wear casually outside of winter sports.
$126.99
WAS: $150.00*
loose fit wide, ribbed neckline knit wool fabric feels cozy off the mat, keeping you dry and your muscles warm during recovery embroidered swoosh logo at center
$41.99
85% microfiber polyester 15% spandex ... cold ... single layer engineering controls odor and inhibits bacterial growth on fabric wicks and aids in moisture evaporation brushed inside for warmth and comfort extended body and sleeves for ultimate athletic fit raglan sleeve drop tail tagless, flat...
$105.00
relaxed fit four way stretch for unlimited movement seams set away from shoulder zip through collar with interior wind flap for ultimate warmth thumbholes to help keep sleeves in place upf 30 protection moisture transfer fibers move moisture away from skin to keep you
$88.00
say goodbye to your dad's rough, scratchy waffle thermal and hello to our engineered- for- comfort men ’s waffle crew. ... premium weight gives it a nice, luxe feel 4- way stretch for awesome mobility waffle texture creates next- to- skin softness and insulation timeless crewneck...
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WAS: $140.00*
our most advanced performance base layer is 3d- knit to provide a tailored fit with mesh ventilation to balance warmth and breathability ... insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort merino sport yarn helps combine the moisture management,...
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WAS: $115.00*
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 enhancing aesthetics for a range of body shapes back body seam wraps to front for body- enhancing fit crew neck with...
5
Mele
[ I bought this for a gift for my daughter who works outside in Oregon winters with the horses. She loves it- Warm and cozy and fits like a glove! great base layer! Smart wool has been my go to for years!
$130.00
odor resistance ... men ’s relaxed fit top interlock knit fabric breathability and thermoregulation drop shoulder
$75.97-$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: helps keep you...
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WAS: $115.00*
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 enhancing aesthetics shoulder panels eliminate top shoulder seams flatlock seam construction designed to minimize...
$130.00
The garment care is oh so easy. ... Perfect Top for Layering orWearing Alone ... The styling is also extremely flattering. ... I love the length of the body and the
5
Camper at heart
[ The black cherry color is very flattering. I ordered based on true body measurements and the size chart resulting in a perfect fit. The styling is also extremely flattering. The neck is not too tight and not too loose. I love the length of the body and the sleeves. The garment care is oh so easy.
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WAS: $120.00*
as one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as help keep you comfortable and temperature- regulated as you enjoy high-...
$55.00
the fairfax thermal hooded long sleeve is a cold- weather staple built for comfort and style. ... machine wash cold( 30c), gentle cycle use non- chlorine bleach if needed tumble dry low cool iron dry cleanable do not iron
$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...
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WAS: $130.00*
slim fit to follow contours of the body made with merino sport yarn: combines durability and fast dry times of polyester seamlessly knit mesh ventilation designed to keep you dry and comfortable 3d mapping provides maximum mobility ribbed elbows provide added durability mesh zones for better...
5
LPaul
[ I was looking for wool thermal layer for my husband, who runs cold. Rather than settling on a bland look, I chose this colorblock version for its added style. While he does n't fill it out quite as nicely as the model(!), he looks great in it.
5
rahoran53
[ I bought the Smartwool to keep me warm and comfortable on a 12 day trek in Nepal. The performance was outstanding and, as advertised, it was very breathable to keep me warm and even cool in the afternoons. It has a very comfortable feel and looks great as well.
$120.00
women ’s regular fit themal interlock knit fabric set in sleeves thermoregulation and
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WAS: $120.00-$145.00*
we 've updated the fit of our men's classic thermal merino base layer 1/4 zip to improve functionality while also enhancing aesthetics. ... size medium center- front zipper: 10 '' ''( 25 cm) machine wash warm gentle cycle wash with like colors do not bleach tumble dry low cool iron as needed do not...
$100.00
machine wash ... knit™- engineered body mapped technology? to regulate your body temperature and? let your skin breathe during high- intensity activity cool- lite™- a lightweight and breathable fabric blend raglan sleeve construction for mobility gusseted underarms for mobility and comfort thumb...
5
Mark
[ I am getting synthetic products out of my wardrobe and I have become addicted to Icebreaker long sleeve layering shirts. They are extremely comfortable, come in a variety of nice colors and weights, so are quickly replaced my synthetic top layers.
5
The Greek
[ This is one of two or three of the most amazing clothes I have. Technically it's a base layer but it's something I wear almost anywhere with the right pants and shoes. It's wool, but it's incredibly soft and comfortable. It works great as a base layer, but it's versatile.
5
Fredrick
[ This color is perfect, very beautiful and should be used again and again. Ideal light weight garment for fitness. Very breathable.
$64.95
fit and design interlock knit crew neck with set- in long sleeves flatlock seam construction designed to eliminate
5
Toasty
[ I bought these for my grandson for skiing and he likes to wear them like a sweater at times. What more do you want, warmth and some style. He loves them.
5
Nana
[ I purchased these for my grand daughters, to provide extra warmth without extra bulk, for our cold Michigan winters. They love sledding, playing in the snow and hiking with their mom, dad and brothers.
5
bethr524
[ I bought this Smartwool baselayer top because I really needed something that would wick the sweat away when I was exercising outdoors on those chilly days. This top does exactly what I want. It's soft and comfortable and keeps my core dry even when I sweat beneath other layers. It washes up easily and does n't retain odors. I 'm very happy with this item.
5
WI_Dad
[ Bought for our 5 year old daughter to use while skiing in UT. She is very picky about colors and general comfort but she loved this smart wool baselayer. So far has held up to washing as well. Will buy another when she outgrows this one.
$36.00
quad- blend fabric technology allows heat retention to keep you warm ... 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...
$92.00
active fit micro- elite chamois gussets under arms and at cuffs for a closer fit zip through collar with interior wind flap for ultimate warmth moisture transfer fibers move moisture away from skin to keep you dry upf 40 protection extended cuffs with thumb holes zip pocket on the
5
Snowhound1701
[ If you ’ re even thinking of going up to the mountains to ski or snowboard for a few days you better have all the layers for any conditions. Unless you want to freeze or be sipping hot cocoa in the lodge while your crew are a ripping it up. There is no equal when it comes to this base layer. Warmth and comfort all day. This is the Cadillac. Wouldn ’ t think of leaving without out this top.
$130.00
slim fit is intended to follow the contours of the body crewneck long sleeves engineered construction uses knit structures to enhance performance with lighter weights and cleaner finish 3d mapping results in near custom fit and freedom of movement while ribbed elbows provide added
$54.00
a classic regular fit silhouette combines with understated chest embroidery for an effortlessly stylish look. ... its heavy waffle knit thermal fabric blends 60% cotton and 40% polyester for ultimate comfort and a yarn dye print that
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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
$69.97-$130.00
WAS: $130.00*
merino sport yarn combines the power of merino with the durability and fast dry times of polyester mesh ventilation seamlessly knit in gender- specific zones designed to keep the body dry and
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