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Stay warm and cozy this winter with the best thermal shirts for cold weather. Designed with advanced insulation and moisture-wicking technology, these shirts provide exceptional warmth without sacrificing comfort. Perfect for layering, they offer a snug fit that traps heat while allowing for easy movement. Choose from a variety of styles and materials to suit your outdoor adventures or everyday wear. Embrace the chill with confidence, knowing you’re equipped with the ideal thermal shirt to keep you comfortable in the cold.
$22.99-$35.00
WAS: $35.00*
It keeps her warm on cold days ... She prefers this of UA- more comfortable and keeps her warm. ... Kept my daughter warm while playing fall softball. ... They are warm, fitted and wash
5
LisaG1974
Did its job. Keeps warm and washes well would buy another.
5
aTut
I bought this for my daughter to wear under her softball jersey on cold days. She loves it.
5
Cstl
Perfect fit and keeps warm for cooler days during outside sports.
5
KEA17
Bought for track season. Perfect fit. Perfect weight.
5
SoccermomMel
It was exactly what we needed. It kept her warm the entire game.
$57.99
Must have for cold weather ... Just used mine on a ski trip in very cold weather and it was perfect. ... This may be listed as thermal underwear but it's nice enough to wear as a
5
Kellieruth
I bought this for a trip to Colorado. Worked great in cold temperatures and washes up to look brand new.
5
Jay64inTexas
I bought two of these in preparation of a freezing winter weather storm. I could not be happier with the quality. Theese are great as shirts as well. Seemed a little costly, but well worth it.
5
SOCORROV
They are a Christmas gift but the material is awesome.
5
JohnW
I purchased the thermal pant at a local Carhartt store, and the thermal shirt online. Both fit perfectly and provide good warmth under the Carhartt twill pants.
5
MicheleL
My husband now has one of these for everyday, they are comfortable and do a great job of keeping him warm as a base layer.
$55.00
Great cold weather undershirt ... Best set I 've ever owned ... My son loves this shirt he wears when it ’s cold for baseball games ... fitted long sleeve shirt for versatile wear ergonomic design keeps seams off of high abrasion areas mock neck...
5
Davidkan
Very comfortable. Fits very well
5
K Saucier
Bought for an Alaskan trip and product kept me warm the entire trip.
5
JD2716
Used for cold, rainy baseball tournament and very impressed with the quality
5
Ann and Glen
This is a cozy and warm under armour coldgear. It ’s lightweight and can be worn as a base layer or wear it on its own. It ’s a nice fit and washes up beautifully. The grey colour is quite sharp.
5
Baseballguy3395695
This shirt provides a lot of warmth but is super soft and comfortable. Great for under shirts on the baseball field or in the stands watching. Also used for outside work as it wicks moisture while providing warmth. I have not gone for a long run in this shirt as it may be too warm for that.
$19.99
WAS: $24.99*
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.
$55.00
This is great for cold weather and fits great, I would recommend ... Bought this for cold weather lacrosse for under uniforms, it ’s perfect. ... Great base layer to use in the
5
RicoGerardo
Used this shirt under my winter jacket for a trip to Yellowstone and kept me warm throughout the day. Would highly recommend as an inner shell when out in the cold.
5
iony boy
excellent product higt quality
5
CaptDave13
I really like this shirt at the gym. It ’s very light and comfortable. Fits loose which is perfect when working out. I would recommend this shirt even for hanging out.
5
K Saucier
Bought for a trip to Alaska. It kept me warm the entire trip.
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.
$55.00
Great cold gear for field hockey games. ... Great cold gear! ... I buy these for my daughter who plays softball and she loves to wear them under her uniform on cold
5
Skorpio23
This fits true to size and is very comfortable. My Daughter loves if for those cold early spring softball games.
5
Suzie7
Perfect, the quality is amazing.. Really nice and good product, I love it..
5
Smus54
Purchased this for both my wife and daughter for when they coach and play softball, respectively. They ’ ve been pleased with how well it keeps them warm as well as the comfort.
5
chandanabells
We purchased this for my daughter to wear under her softball jersey to keep warm during cold spring games. She is a pitcher so she needed something that kept her warm but also was not constricting. This is exactly what we needed. My daughter said it was very comfortable and allowed her the freedom to move while playing softball. She also liked the neck line because she does n't like undershirts that are tight around the neck area.
5
kzdog
fits great and keeps me warm. would definitely purchase again.
$45.00
Bought this for my 12u player for colder weather and it's awesome, thicker material and worked great. ... My son uses these for cold weather under garment gear and has stayed comfy all day long during soccer
5
Sha_q
Great for hockey. The mesh on the side ventilates well while the fleece in the middle keeps my 7 year old warm.
5
New York Giants 21
Comfortable. Easy to play with the. Fits well. Keeps warm.
5
Daddy22
Perfect fit for my 2. 5 year old son. Great first layer for learning how to skate at the arena and on the outdoor rink. Love the turtle neck for added warmth. Definitely recommend
5
Trisanna
My 71/2- year- old son loves this shirt. He wears it to hockey or soccer games, and it keeps him warm. The size is true to size. He is 23. 3kg, 130cm, and wearing YMD.
5
SDmamajama
My son loves these Under Armour long sleeves for winter sports. They 're comfy and do n't trap the heat, which is helpful for his stink!
$45.00
This was perfect for under uniform for cold weather! ... Great for sports in cold weather ... I bought this for my son to wear under his jersey for baseball games when the weather was freezing and this kept him warm without overheating
5
JJ the t
My son uses this under his hockey gear and loves it
5
boymom87
My boys love to wear Under Armour heat or cold gear under their clothes and for sports.
5
ckerr19
Nice quality and neutral color for layering
5
Hanna2010
I fits perfectly and my son loves to have it under his jersey.
5
Boom1
Great quality. Keeps you warm. Comfy. Recommended for cold weather
$45.00
Fits great in the westher as we get alotnof cold weather and wet weather. ... Great for cold weather ... Works great on cold and wet nights. ... Would recommend for cold
5
TSi12
Fits nicely under girls softball jersey and helps keep her warm
5
Bthurb
Purchased for under my daughter ’s softball jersey. Great weight and soft.
5
hut575
This is a perfect shirt for wearing under a short sleeve uniform in early Spring. It's nice and thick and long enough to stay tucked in.
5
Tyobl
This top is so comfortable. It is a nice space layer and keeps you warm. The color is an added bonus because it is a beautiful light purple. It has a lot of stretch and is great for walking and playing pickle ball. I am 5 ‘ 2 “ tall and weigh 100 pounds and I got them medium children ’s which fits perfect! Arms are just the right length which can be a problem for me in women ’s sizes. I loved it so much that I got two purple ones and one black one!
5
Pops2013
Daughter loves it especially during the colder nights at softball practice.
$19.99
WAS: $24.99*
country of origin: imported brand: cold ... pruf ... 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!
$33.73
WAS: $60.00*
It keeps me warm on the really cold days, but breathes well to keep me from excessive sweat. ... Each of the Cold Gear Base Layers, base layer, base layer 2. 0 and base layer 3. 0 are
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.
$29.99
trim athletic fit with extra length in body and sleeves to give you comfort while you move crewneck for easy on and off slip hemmed cuffs to hold you in as you move lightweight, with single layer engineering for a comfortable
$28.00
They are perfect for cold soccer games. ... Great cold weather compression gear! ... Warm and washes well ... It keeps him warm during his soccer games. ... Keeps kid
5
Sportsmom3107
My son started coach pitch and was needing a long sleeve shirt to go under his jersey. It was still in the 40s and this kept him warm during the game and practices. It has multiple uses; when playing outside, on a cold rainy day or to layer under jerseys whether they play inside or out.
5
Ballmom151
Both my kids wear these long sleeves under their baseball/softball uniforms to stay warm on cold days. They are comfortable, warm and a good price.
5
RoSiih3032
My son love them, never takes them off and they are tru to size.
5
She108
My daughter plays softball and it gets quite cold sometimes. She says this shirt helps her stay warm and it is comfy.
5
Lizzzard skinsss
Great shirt with extra warmth for the kids outdoor activities
$100.00
nike therma- fit technology helps manage your body's natural heat to help keep you warm in cold- weather conditions water- repellent finish helps keep you dry in wet
$39.99
WAS: $44.99*
inside layer: 100% cold ... rib cuffs drop tail for added protection against cold regular fit ... outside layer: 70% polyester/ 30% merino wool ... pruf® technical fiber polyester with silvadur™ intelligent
$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...
$41.99
cold ... 85% microfiber polyester 15% spandex ... 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...
$56.23
WAS: $100.00*
I work in a meat room and it ’s very cold, I only have to wear my base 4 shirt and my work tshirt and I ’ m kept warm!! ... fit fitted long sleeve baselayer technology ua base™ 4. 0 locks in your body ’s heat to deliver extreme warmth even in the brutal cold...
5
Mom2025
Got this for my daughter, she is a teacher. Her room is cold and then she has bus duty periodically. So the 4. 0 is perfect for being somewhat sedentary. Surprisingly, actually keeps her warm! She is a chilly person normally, so cold temps are miserable for her. We 've tried many products. The Under Armour is work the investment!
5
KarenK11
I am always cold. This is the solution! Love it!
5
East Coaster
These are the best long underwear going. I mind the cold but not when wearing these.
5
Jea970
The fit is loose but not so lose that I would exchange for a smaller size. The shirt is warm but not too warm when inside. Outside it keeps me toasty at 30 degrees and I ’ m always complaining of being cold. All in all, I ’ m very happy with this purchase.
5
I recently purchased the Under Armour Base 4. 0 Crew, and it's exceeded expectations. This top delivers comfort, warmth, and performance.
$40.00
Bought this for my son as the weather got colder, did the job and he stopped complaining about the cold. ... Perfect for cold weather ... Great product helps keep the kids warm in coming in cold
5
RichF77
Bought this for grandson, looks good, well made, fits perfect& does the job
5
Qwrrtyb123
These are everything for when the weather gets cool and cold!
5
Tstewart
Good quality and does its job. The fit is perfect and it is good quality.
5
Edii
My 8 year old son loves it, it keeps him warm on his soccer games.
5
Yetirocks
Got this for football season! Underarmour looks awesome and my boys love it, and it keeps them warm!
$20.99-$40.00
WAS: $40.00*
moisture wicking fabric absorbs moisture to help keep you dry and comfortable our cold weather compression fabric offers warmth and supportive stretch 50+ uv protection( rated according to astm
5
hdubs828
I received this as a gift and was a bit wary of the material/fit. I get very warm during cold weather runs but this was perfect! Great for layering on a super cold day but warm enough to wear without another layer on a 30 degree day. Ended up purchasing another one. I love them- perfect for running in Upstate NY winters.
5
RMS72
My daughter used this a few times this fall during some cold weather softball tournaments. She said it kept her warm. Wasn ’ t restricting during pitching or batting. It has thumb holes to cover your hands when waiting to bat or on the bases. I would say it ’s the same quality as her old Under Armour mock neck shirt but at a better price.
4
TJE233
I ’ m glad I bought this cold weather shirt for skiing.
$45.00
I bought this to keep my daughter warm during sports& it ’s the best! ... My daughter wore this under her softball jersey in very cold weather for a tournament it kept her warm the whole
5
Bf0922
This is a great product that has thick lining and fit true to size. Good quality and keeps my kids warm in the cool seasons
5
swright01011
These ColdGear shirts are PERFECT for wearing under your uniforms on chilly game days. I have black& white for both my kiddos
5
Brittany Maraia
perfect for those cold nights on the ball field!
5
M Carter
Best warm gear there is. Well worth the price
5
BG10i5
warm fits great. Great for outdoor sports and camping
$45.00
They seem to keep him warm and fit well under his shirts. ... Is absolutely as good as any premium cold weather gear you 'll find. ... Keeps him warm while
5
dgsm
really like the dsg line- much cheaper than national name brands and just as good in quality- these mock turtle neck shirts have served me well for many winters- they hold their shape and do n't shrink- nice looking shirt
5
My husband loves this for when he plays softball in cooler days
5
Jules55
I love these shirts. I own 5 of them now and will purchase again.
5
Eve1223
I bought this for my teenage son when he plays soccer in freezing cold temperatures. It keeps nice and warm!
5
Jonathan in OH
Super comfy and breathable. Low price and nice fit
$44.99
My favorite to wear when the weather gets cold. ... My fiancé loves to layer it to give an extra layer of warmth without the bulk. ... You feel instantly warm and cozy when you put this
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
$44.99
dry® technology lining wicks away sweat rugged flex® technology moves with you fights odors flocked seams and tagless label add to overall comfort zip pocket on chest concealed thumb
5
Kaiii
[ Carthatt is a quality brand that is made affordable. I used this for my snow trip and it gave me warmth so I do n't have to layer too much. Very satisfied with my purchase!
5
Bobby
[ I knew I was getting a good shirt because this is my second one. It fits snug enough to keep out the wind. It wicks and dries like an athletic shirt. Since it is 100% polyester, it is likely more durable than most. It keeps its shape and looks better than most.
5
BD592
[ Best value for your money as far as base layers go. You can spend 3x more on Smartwool or Icebreaker if you are looking for the best with a hefty price tag. Overall, this lives up to Carhartt ’s name
5
valleygirlvamp
[ I bought these for my husband who happens to love Carhart. Moosjaw had the most competitive pricing and shipping rates. The product got here fast, and safety packaged.
5
Josh
[ I have purchased a half dozen Carhartt Base Force crew shirts. Yes, they 're expensive. Yes, they 're worth it. They keep me extraordinarily warm, and they 're very comfortable. They 're worth every penny you 'll spend. Buy one for your dad, too. He 'll appreciate it!
See Price in Cart
WAS: $65.00*
nike therma- fit technology helps manage your body ’s natural heat to help keep you warm in cold- weather conditions ... bring on the cold. ... high- stretch fabric heat- regulating zipper guard at neck unbelievably soft on inside and smooth on the...
$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...
$62.00
nike therma- fit technology helps manage your body ’s natural heat to help keep you warm in cold- weather conditions soft, warm fleece curves at the front and back hems for a little more coverage small side slits create extra give while you move not too tight or...
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)
$60.00
original cold ... compression fit shirt 4- way stretch material moves better in every direction mock neck design offers added coverage for a comfortable fit long sleeves deliver complete
5
Joel2325
Cold Gesr turtle neck never lets me down. Always keeps me warm during the winter& I had to get some new gear. Will be back for plenty more!
5
Muhamed Ali Hawk
100% Satisfied Like Always, My Forever Favorite Brand, I Bought Five In Black Color, All Fit Perfectly, Nice And Soft Material, Thank You UA.
5
Blackknight89
I bought this to wear on the golf course during cold weather. I don ’ t particularly like to over layer when playing. I like the tight fit and moc turtleneck. It is extremely comfortable and can even be worn in moderate to warm temperatures. It came out of the wash in perfect condition. I would recommend this product to friends and family.
5
Paulie84
Super comfy true to size and keeps u warm in cold weather
5
JE Eggers
Fits great, and keeps we warm
$13.48-$28.00
WAS: $28.00*
perfect fit comfortable ... Keeps kiddos nice and warm. ... This works great and keeps him warm. ... My son loves wearing this under his jersey to keep him warm on those cooler
5
AnaNorwalk
Good fit, son loved it. Fits to size. Neck not too tight.
5
tlo80
This shirt works well for playing sports in cold westher and is a good value for the price. I will likely buy more.
5
King1230
I bought thisnfor my son and he wants to wear it under everything
5
Gooooal
Bought for my son last minute as he was in a soccer tournament which was cold and windy. This kept him warm for the games and was n't too bulky under his jersey.
5
Curtis12
Bought this for my son he loves it… great for winter activities
$55.00
My daughter uses it for softball when it is colder outside and it held up well in two tournaments already. ... It was great under my NFL jersey and then with a coat as the evening got
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!
$90.00
nike therma- fit adv technology combines heat- regulating fabric with advanced features to help keep you warm in cold- weather conditions ... 1/4- zip heat- regulating for cold temps reflective details on front, back and sleeves zip pocket at side...
$45.00
Needed an extra layer for cooler weather runs and this worked perfectly! ... This shirt is the perfect layer to put underneath a sweatshirt or long sleeve to help keep my husband warm at football game, outside work,
5
Batboy28906
Bought this for under my sons baseball uniform for colder spring nights. Definitely worth the price. Cost effective and great product
5
Aw14
Feels good and kept me warm. Will definitely buy more.
5
Acalheel
Good for cold days on the field. Needed when it ’s windy and cold.
5
Hatethecold
These were a good deal. Great price on sale and warm.
5
AB643
So comfortable; bought a second color so I could have another one
$50.00
nike therma- fit technology helps manage your body ’s natural heat to help keep you warm in cold- weather conditions soft, warm fleece curves down at the back hem for a little more coverage small side slits create extra give while you move not too tight or too...
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
$34.99
Excellent cold weather protection ... a good base layer is always important; cold ... pruf® men ’s expedition long sleeve crew is ideal for keeping warm in extreme
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.
$21.73-$44.99
WAS: $44.99*
from job site to weekend projects, this women's midweight crew offers easy- wearing warmth in those cold months. ... Best Thermals I have ever worn! ... These are honestly the best thermals I ’ ve ever
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.
$80.00
compression: ultra- tight, second- skin fit sport activity recommendation: training, sports, skiing, snowboarding& other cold weather activities weather conditions: cold temperatures dual- layer fabric with an ultra- warm, brushed interior& a...
$90.00
smartwool took their popular classic all- season merino base layer and added a 1/4 zip to it—making it the perfect base layer for warm or cold
$38.23-$119.99
WAS: $119.99*
with sweat- wicking, structured and woven fabric and easy- on, easy- off design features, it's perfect for pushing the pace during your cold- weather
5
aplc
Daughter loves this... perfect for running and enjoying outdoors
$105.00
machine washable ... 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
$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
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
$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.
See Price in Cart
WAS: $115.00*
# Sweepstakes After having their all season or originally 150 merino clothing, this thermal merino is perfect for those cold morning runs. ... The best. ... Great for cold days and not so cold
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
$99.00
slim fit zip- neck styling with internal neck tape for added comfort; locker loop for hang drying raglan shoulder seams allow freedom of movement, with full underarm gusset for range of motion and chafe- free comfort long center- front zipper vents body heat and is backed by kissing welts for low-...
5
Se3smith
[ Thin, warm and true to size! The purple is a darker color. Which is nice. Can wear as a base layer or stand alone top. Ive worn skiing and tennis!
5
AB9182
[ This is the second capilene layer that I ’ ve purchased, love wearing this in cool weather or as a base layer when I ’ m skiing. I ’ ve had my first for a while and has maintained its fit.
$115.00
whether you have a weekend full of relaxation ahead of you or you 're hitting your local trails, this 100% merino wool base layer made with interlock knit for enhanced comfort, breathability, and odor resistance will not
See Price in Cart
WAS: $115.00*
add one of our best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or
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!
$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...
$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
$159.99
The best thing ever. ... 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
$62.00
this essential crewneck is made with moisture- wicking fibers, 4- way stretch, and a smooth formfitting design to keep kids warm and comfortable without the added bulk or
$58.97-$81.97
WAS: $110.00*
regular fit long sleeve
See Price in Cart
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.
$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.
$49.99
mizuno drylite® moisture management: using a dual filament yarn construction to transport excess moisture away from the body to create a comfortable and dry body microclimate for
$189.99
This is perfect to stay warm while working outdoors in the cold weather. ... Flannel shirt is the best! ... It gets very cold where I live and this helps
5
Bought the shirt for my dad who ’s just turned 83 and it works great and easy to use
5
lennie
Comfy, cozy, heated flannel shirt. It's great to wear even without the heat turned on. I 'd buy another one if it came in different colors.
5
rory
I might look like a lumberjack, but I 'm as warm as a snuggly kitten in this flannel shirt. it's great in the fall and spring over a t- shirt, or under my winter coat when the snow hits the fan... so to speak.
5
Jay p
This flannel is wonderful! The highest level gets hot very quick. It gets very cold where I live and this helps tremendously. I can wear a shirt under this and even a jacket over it and stay perfectly warm and toasty. The battery does n't get in the way or hold a lot of weight. The button is very helpful too being right below the neck area. This shirt works while working or just hanging out!
5
This is perfect to stay warm while working outdoors in the cold weather. I even bought an extra battery for good measure.
$155.00
with seamlessly integrated insulation and ventilation, perfectly articulated flex zones, and merino wool comfort, it 'll be the first thing you grab when you need a warmer layer for your high- intensity, cold- weather
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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-...
$90.00
I 've taken my base layers out on two blustery, cold hikes now, and they 've done an excellent job of protecting me and keeping me warm without making me feel clumsy or
5
T Oot
Just came back from Banff Canada and wore this base layer everyday. I was warm and dry in sero degree weather!
5
Terri350
They fit great, feel great, and are really warm. I will buy them again!! Not sure what else to say but they require a longer review. I really, really, really, really like these base layer tops!!
5
Mkt5308
[ I 'm tall with long arms and sometimes merino is too short in the sleeves, not this time, fit is great medium is medium. Pistachio color is bright and fun
5
Dsrote
[ I purchased a smart wool base and fell in love. it ’s easy to clean and amazingly warm for its light weight! i would buy other colors if available.
5
Silvercurls
[ Bought my Smartwool Women's Classic All- Season Merino LS Base Layer Tops just in time for the cold weather in the “ D ”. Best referral from a friend ever! Not only do I look good because they fit beautifully but are lightweight; so I ’ m not bulky 😊 whether worn alone( burnt orange is hot 🔥) or layered under my sweater I ’ m warm and toasty…looking good! Not sweaty in this wool top; comfort is sexy, ok! Grabbing more for stocking stuffers 😊
$39.99-$41.99
the cold ... long sleeve base layer top from cold ... silvadur™ intelligent freshness controls odors and bacteria growth, and the top wicks away moisture to keep you dry and
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.
$40.00
This is a very comfortable top that I use in cold weather. ... I bought it for my sister, she loves it, keeps warm and lets move easy ... Soft, sporty
5
Erica320
Keeps you warm and looks nice too! runs a bit small
5
Darcg1
Glad I got this. It ’s very comfortable. Perfect for this season
5
Casual clothing
I purchased several black tops to wear while riding in the winter. They are form fitting Warm and easy to move in
5
Wenzhu
this is super super good looking and nice job too thanks
5
Wenzhu
This is good look and good quality so cool style too
$44.97-$98.00
WAS: $98.00*
This is so comfortable and cozy for cool weather running. ... The best feature is the sleeves that can turn into two different lengths of gloves. ... It is the best lightweight
5
YaelE
Very comfortable, Keeps me warm, great cover for the hands. love it.
5
RaechelD
Love this hoody for cool, windy, or rainy runs. It ’s very soft and warm! I wore it on my first 50K and it was incredibly comfortable. The sleeves are long enough for the thumb holes and the pull over hand warmers are nice if you didn ’ t bring gloves.
5
AuroraG
My new favorite hoody to run in for chilly weather! height 5' 2 115lbs size XS is perfect for me
5
KellyI
Wonderfully comfortable for these cold months, without being heavy or bulky. Has definitely become a staple piece in my running wardrobe. Medium fits perfectly( 5 ’ 10 ”- 155 lbs- typically size 8/10)
5
KimberlyM
Great midweight layer for Saturday morning long runs in the South. I wear it alone for temps in the low 30s. Love the pretty lavender color. Also just enjoy wearing it for casual wear on non running days.
$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.
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