â
Discover the ultimate comfort and performance with our men's lightweight base layer collection. Designed for optimal breathability and moisture-wicking, these base layers keep you dry and comfortable during any activity. Perfect for layering, they provide a snug fit that moves with you, ensuring maximum flexibility and warmth without the bulk. Ideal for outdoor adventures or everyday wear, our lightweight options are crafted from soft, durable materials that enhance your active lifestyle. Elevate your gear and experience the perfect foundation for your athletic wardrobe.
$90.00
Super nice lightweight shirt ... [ 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
5
JD L.
Like most Smartwool products I have purchased, this one is a nice weight, completely soft and comfortable AND attractive. I get compliments on it all the time.
5
Mike B.
Super comfortable first wear while on a 2 day backpacking trip. It made a great base layer and then when temps when up it was nice on its own. And a layer of sun protection with long sleeves! Odor control was evident, but control being the key word-- definitely not absent. I recommend this shirt and look forward to using again on the next hike and for my trip to the Tetons next month( as well as trying as a base layer for snow skiing!).
5
BJ
Perfect base layer for Spring in the mountains. Not too light, not too heavy, just right.
5
B
Love this shirt! I hate wearing synthetic material and this feels great and does a GREAT job as a base layer Also looks decent just to wear around
5
Peter K.
Fantastic light weight long sleeve Tee for hiking. I already have two and will purchase a third!
$180.00-$200.00
Medium fits me perfectly at 70 '' and 170 lbs with a light liner underneath. ... I do n't review products often but I have had lots of Smartwool stuff and always been impressed so her goes: So far this garment is
5
Tim S.
I do n't review products often but I have had lots of Smartwool stuff and always been impressed so her goes: So far this garment is awsome. The wieght allows it to be worn as a primary layer or under a shell. Medium fits me perfectly at 70 '' and 170 lbs with a light liner underneath. The hood fits tight when in use, maybe too tight, we 'll see. after I break it in. It also covers the chin and mouth area when pulled up. It could use a chest pocket. I will be using it during a golf trip toi N Ireland with temps in the 50 's and 60' with wind and rain; part of. a layering system I 'm bringing.
$85.00
He loved it. ... Great quality, ordered for my husband for
5
MAJB
Great quality, ordered for my husband for Christmas. He loved it... would order again.
$115.00
If you need a base layer or something lightweight to wear on a chilly/cold night- These are useful and for great value. ... Exactly what you expect from smart wool base
5
Connie
[ My old lady and I have the smart wool top and bottom 250 base layer set. They are exactly what you expect from smart wool. Great quality, the warmth I needed, and pretty useful in most conditions. If you need a base layer or something lightweight to wear on a chilly/cold night- These are useful and for great value.
5
Britt802
[ At first these pants feel sort of itchy but once you 're moving around in them it 's very comfortable. I first wore them in 35- 40F under normal hiking pants and was too warm while moving. They do regulate body temp well but I wo n't be wearing these hiking unless it 's below 35F. I 'm also not a cold bodied person and I move fast.
5
jjrunning
[ We live in Minnesota, and have pretty cold winters. This baselayer has kept me much warmer than my old baselayers, so far! Great for running, walking or casual use. I plan on using them for a winter camping trip coming up as well.
5
KonaSunsets
[ Bought these as a gift. My daughter said her husband LOVES them. He 's had a pair for over 10 years and they are worn out. So a new pair was needed.
5
jackie27
[ I got these as a gift for someone and was impressed by how soft they were. I haven ’ t worn them, but he ’s said they ’ re very warm and not itchy at all. I ’ ll definitely be buying a pair for myself soon!
$40.00
Very comfortable to wear. ... Sweat resistance and keeps me cool ... Got this to wear under my hockey gear, I would normally wear an XL but got a L since I wanted a tight fit, it's exactly what I
5
RobertP641768101
Got this to wear under my hockey gear, I would normally wear an XL but got a L since I wanted a tight fit, it 's exactly what I wanted.
5
Mail8601
Nice fitting and good quality shirt. It is very comfortable.
5
Gettin Buckets
Perfect fit just like Nike Pro but with the Jumpman logo. I 'm looking forward to more colors.
5
Momballer3
My son was this for basketball. Material is high- quality and soft to the skin. Very comfortable to wear.
5
Boyzzmomma
I purchased for my son for work and the fit and texture is perfect
$130.00-$150.00
Functional and stylish ... [ This is a quality built base layer and I 've worn it by itself or under a light jacket for plenty of warmth. ... It ’s form fitting and the multi panels really make it articulate with my
5
MoosejawDon
[ Feels light on the skin and is plenty warm. I would like a little more move/breath ability in the pits however I do not feel sweaty. Perfect base or mid layer
5
Timoby2k
[ This has become my new favorite baselayer. It ’s form fitting and the multi panels really make it articulate with my movements. I wear it as my only layer in damp mid thirty degree runs. Also looks good to wear on its own out and about.
4
Rory
[ This is a quality built base layer and I 've worn it by itself or under a light jacket for plenty of warmth. Be advised to go one size up, especially if you have an athletic muscular build. Fits close to skin, athletic cut for sure. Looks awesome.
$85.00
good fit, very comfortable, can wear several days camping with only needing to air out overnight for no
$80.00
Great lightweight tee. ... Super breathable and comfortable. ... Great
5
MARK S.
Great lightweight tee. Super breathable and comfortable.
$75.00
Excellent Lightweight Wool T- Shirt ... This shirt hit it out of the park! ... :) ... [ I like the color and fabric the medium fitting is smaller than the normal mediums I get in the other icebreaker
5
bhinkston
[ I was looking for a lightweight T- shirt thought would retain odors like a polypropylene shirt does. Something that would dry quickly as well. This shirt hit it out of the park! I was thrilled on any of the colors except Lichen, but this is my go to casual, day wearing shirt … so I bought another.:)
4
rw
[ I like the color and fabric the medium fitting is smaller than the normal mediums I get in the other icebreaker shirts
$49.99
WAS: $60.00*
Very nice
5
Charlie
Very light weight. Have not worn it yet but will soon
$57.00
Awesome base layer shirt ... By far the warmest thermal type top that I have ever owned. ... Super cool shirt fits good and good for cold weather ... This shirt has a fantastic fit and provides great warmth in the cold
5
NickV867610924
Fits perfectly for me. Slim fit and I 'm tall so I like how the shirt is a little longer. Hugs my body nicely.
5
yellowjacket486
Great shirt. I have been wearing it in 25 to 35 degree weather as a base layer shirt. The shirt has done a great job holding my body heat in. I wear it under my work polo shirt. I have found when you wear a compression shirt under it is even better holding heat in.
5
Blake739678113
By far the warmest thermal type top that I have ever owned. Looks great and feels really top notch to wear. I highly recommend buying any of the pro- warm products.
5
Cmendoza7139
Love all Nike products. They are the best. Great quality and perfect fit.
5
Baseball00
My 14yr. old uses it daily for his baseball practice( I obviously washed every night). It is awesome! Not only, with me washing it every night, it does n't wear out... which is a plus.
See Price in Cart
WAS: $115.00-$125.00*
[ This is my husband ’s Favorite base layer. ... It ’s perfect layered under a vest. ... So comfy and the fit is just great. ... I was comfortable in a light jacket and this baselayer
5
Ben F
[ I was worried about it being too long like some other smart wool tops I ’ ve bought but didn ’ t have any problems. I ’ ve hiked with it twice so far and didn ’ t need anything else until it got below freezing.
5
joshw
[ I bought this a month ago and have worn it on several occasions where the temps were in the low 30s. I was comfortable in a light jacket and this baselayer crew. I will likely replace all baselayers with this product.
5
WhiteRabbit187
[ Perfect fit for my tall giraffe body type! Lol Definitely a slim fit. Works great for crazy winter weather in texas that goes from hot to cold in the same day.
5
xtian79
[ Looks good, feels good, keeps me warm, do n't even ask me about its SAT scores( they 're amazing) okay, go ahead and ask me about its SAT scores, because I was 36 characters too short...
5
dms23375
[ soft fabric. high quality construction. great colors. I have the top in olive. it looks like a light sweater. I have worn it several times and it holds it shape. highly recommended!
$100.00
Comfortable long sleeve ... I personally used it for an outdoor run and felt great. ... Like the feel of this LS
5
Jag26
Like the feel of this LS tee. Can use it as a base layer or by itself on cooler days. I personally used it for an outdoor run and felt great. One thing though… while the fabric is intended to wick sweat out, I did notice the tee being soaked so not sure I ’ ll be taking it out for runs again. The length of the tee is also a little short so consider that if interested in this shirt.
$90.00
Nice lightweight shirt ... Comfortable fit, true to size and dries quickly when the sweat gets going. ... Great dor working out and very comfortable under a sweater for cooler
5
Max
[ No merino wool company compares to that of icebreaker. It feels fantastic while still maintaining all the qualities of merino. I have no complaints about this shirt.
5
Navi
[ I bought this shirt to expand my workout closet, and I have not been disappointed. It 's comfortable, cool to the touch, and has great breathability during any range of activities. I like the color of the shirt( ether) and am overall satisfied with this purchase!
5
Chuck
[ Really love the shirt. It looks an feels great. I like everything that I 've bought from Icebreaker.
5
CAL
[ The most comfortable shirt I own and I really enjoy the way the material feels. I also own the `` normal '' ZoneKnit shirts and I had problems with the fabric tearing easily. This has held up better.
5
JJJL
[ blending with TENCEL making it more comfortable, also no funky smell in the summer.
$24.99
[ It ’s a very comfortable shirt and I also like the color. ... Comfortable and material breaths so not miserable on a hot day. ... Definitely worth the price. ... good
5
gkksjdshhdshe
I got it for my grandsons birthday and he loves it
5
DTR1974
Purchased a month ago and love it! Definitely worth the price.
5
Victoria8a
Wanted to show our support out on the ballfield so purchased 2 of these. Love them so much, our shirts have become a CHOICE for non- related baseball outings. Highly recommend!
5
Mayhem
[ Great fit true to Size, quick dry material great. Comfortable and material breaths so not miserable on a hot day.
5
Edgardo
[ It ’s a very comfortable shirt and I also like the color.
$32.00
It perfectly fits!!! Dry& comfortable! ... Very light so it feels great to work out in. ... Perfect fit and works moisture away fast and dries quickly ... Comfy material
5
wmdogan
It perfectly fits!!! Dry& comfortable! Great quality! Love them! I got 2& definitely I will buy more!
5
WesleyR880949725
These are so comfortable!! Perfect fit and feel great! Can we please get a restock or the red and blue and more colors! Need these in more colors, maybe a baby blue/purple/burgundy/lavender? Those would look great in my opinion
5
RobinR981637451
Good Jawn for gym sessions& running. Very comfortable and true to size. I bought the red one and black one. Will purchase more soon.
5
Lori953607601
Freshman grandson starts Varsity basketball 🏀( proud grandma) loves them!! He has the black and white to wear under home and away jerseys. Loves the fit!!
5
Alex371022492
Runs true to your size. Great to wear when working out or playing ball! Comfy material too!!
$37.00
Comfortable, perfect for a workout, just lounging, or even a base layer when the temperature drops. ... This one worked out well as it was lightweight and breathable for
5
Traxwell
Fits true to size. The moisture wicking material is effective. Comfortable, perfect for a workout, just lounging, or even a base layer when the temperature drops.
5
4dew4
I was in need of a white base layer that night for my son. This was the smallest option in any brand available for immediate pickup in store. It ’s too big, but was adequate and didn ’ t complain.
5
ned113
I bought this nearly a month ago and happy that I did! Great fit, and allows me to move freely. I wear it while working out at the gym.
5
Izzwebz
Good quality and light material. My son wears it for baseball if it ’s cold. Good for moving around. Breathable materials.
5
Run60
This is at least the 8th shirt of this certain style that I have purchased for my son. He wears them most days, three seasons. Great under a uniform, or hoodie or to work out in. Washes nice and does not hold odor. Trim fit but not tight, typical Nike fit. Will buy more.
$12.97-$35.00
WAS: $35.00*
Perfect fit always reliable and durable Starting buying them for my son now also ... It ’s the perfect size for a skinnier guy with some muscle ... A solid fitting
5
MRB411
Feels great, a little ride up but long enough to not matter.
5
Sweetpealild
Got this for my daughter, even though it was from the men ’s department the fit is great. The compression is great and would highly recommend.
5
ACinWI
I use these shirts as an under shirt for all occasions, they are wonderful
5
Run_J
A solid fitting shirt. As a runner, this fits well and comfortably while out on my runs.
5
TDW 5676
Awesome! Great job as always!
$34.99
Bought these for just some general cycling and an injury level to get into some mileage works great feels comfortable ... Good for the
4
Deewill
Bought these for just some general cycling and an injury level to get into some mileage works great feels comfortable
$30.00-$35.00
WAS: $35.00*
These shirts are great to wear during the workout, and also under shirts as it will give you a smooth and soft feeling. ... Great workout shirt and can use it as an under shirt in cooler
5
Becky D
Love how fit so well. It 's so perfect for work.
5
Cheesey99
It fits true to size and amazing
5
Njwolfpax
These shirts are great to wear during the workout, and also under shirts as it will give you a smooth and soft feeling.
5
RefChris
The perfect under garment for playing or officiating.
5
jimjamsong
It ’s comfort that ’s priceless, my body can breathe with this product
$19.97-$40.00
WAS: $40.00*
These shirts are well made and very comfortable. ... I love Under Armor heat gear compression shirts. ... Material is soft and able to move freely. ... This heatgear compressed shirt keeps me cool while playing
5
Comfortmaker
True to size. Very warm fits good
5
Harry66
Love the way the material feels and as always the size is correct. Even though it 's a compression shirt it does n't restrict your movements.
5
Mama T252
Sleeves are a good length. Size as expected. Material is soft and able to move freely. Compression is the right amount. And it looks great, too! Happy with this purchase.
5
Phong 2026
Perfect fit and quality of the material is good
5
RD44
GREAT SHIRT!!! Love the fit and so comfortable.
$30.00
WAS: $35.00*
Im enjoying the fit and comfort ... Comfortable will be buying every color when they drop. ... This is super comfortable, nice fit, and great for working out/going to the
5
LarryW498204998
Great workout attire! Comfortable will be buying every color when they drop.
5
Joglel
Im enjoying the fit and comfort Great product, price was average
5
Mom of Boys
I bought this for our son who plays football and he wears it under his uniform- great fit
5
MrOctober
I recently purchased this Jordan Sleeveless shirt for casual wear and working out
5
aiw1819
This is super comfortable, nice fit, and great for working out/going to the gym.
$75.00
Lightweight but still warm enough for fall days. ... Incredibly comfortable, hold up to wear quite well( especially for a wool blend), resist odor better than most wool
5
dlholen
[ This shirt is a great fit that is casual enough for every day but also looks good for wearing in the office. Lightweight but still warm enough for fall days.
5
g33kle
[ I own 4 of these shirts in total now, my absolute favorite. Incredibly comfortable, hold up to wear quite well( especially for a wool blend), resist odor better than most wool blends. Only wish they still had the large logo on the chest.
5
JoeH
[ Love this shirt. You can wear it as a standalone hiking shirt, lounge shirt, or as a base layer. Comfortable, true to size, thin, light, and breathable, and I love the color. I wear it all the time now.
$109.00
We are on a homestead building in rain and snow, this is my go to base layer, often it's all I need to keep warm when working ... Excellent base layer for wet winter
5
Led13
[ Is it warm? Yep is it too warm? Nope. Is it nice enough to wear to dinner? Yep is it also perfectly fine for hiking? Yep. I 'd buy another in another color if I had the option.
5
Steve
[ Awesome. Light weight but warm. Very breathable. Wear it all the time for skiing, hiking, and running. I am 6ft 170 and a medium fits well. Always happy with OR.
5
Aaron
its my daily driver under my dress shirt in colder temperatures.
5
Ali
Great wool baselayer- lighter than some of my heavier ones, which is exactly what I needed for touring. Does n't get too hot on the uphill compared to the heaver weight merino baselayers I have, still keeps my warm enough, easy to layer with, really enjoying it!
5
lizardblizzard
I bought this for my husband and its one of the most worn items in his closet. He has a really muscular build, so he is always looking for low- bulk layers and this is perfect. He likes that he can go directly from a zoom call( looks dressy enough on screen) to working outside( durable) to skiing( warmth under a ski jacket). He finds that he wears it most often as a mid- layer, but has worn it next to skin, as well. I am online buying him a few more in other colors right now!
$159.99
I highly recommend the heated base layer for anyone that spends time outdoors in the winter. ... It is a nice base layer when he does n't need the heat but he likes the option of turning the heat on if
5
I started with the Action Heat socks, and had to add the base layer to my collection. It ’s just the right amount of heat in the right places to make cold winter hunting trips much more enjoyable. I highly recommend the heated base layer for anyone that spends time outdoors in the winter.
5
Motorcycle C.
I got this primarily for motorcycling in colder weather. It works great. I can wear this with my jacket and jacket liner and I do n't have to wear other layers. I 've only used it so far riding in 50 degree weather but it was warm enough I had to turn it down or off. I usually wear a large but wanted it to fit tighter so I got a medium. The medium fits great. I would say the medium fits me perfect where normally I would wear a large t- shirt or long sleeve. Not too tight but not loose. Have n't had long enough to know how long the battery would last but have used it for a couple hours switching between high and medium and still have battery left. Would definitely use while skiing, etc
5
Laura
Great service and reasonable delivery time, especially as a Christmas order. This base garment is very well made and sizing is perfect. Very pleased.
5
Joshua
I just got my base layer and wore it to walk the dog and it was cold and windy outside. Absolutely was warmer
5
Rodney
Heats your body very well, keeps the cold out, easy to use, must be cleaned gently, I use all the time when a must to be outside for a long duration.
$65.00
Its great, Wicks away moisture, is warm but lightweight and breathable, soft and comfortable. ... They fit very well, and because they are wool, you can wear them multiple days on a hiking trip or travel without them smelling or feeling
5
Lucas T.
This is the PERFECT shirt for warm weather trekking. The super soft merino wool fabric helps wick moisture and keeps me smelling fresh while I 'm out on the trail and wo n't stink after a long day, it also helps keep me cool. I wish more brands would recognize the amazing properties of wool, it 's not just for winter!
5
Axel
Best t- shirt around. Got in 3 colors and will buy more in a heartbeat should more colors come that suit me. Excellent flattering fit, really like the slightly longer arm that does n't ride up. Please add even more staple colors and v- neck options would
5
PAguy
These are my favorite shirts. They fit very well, and because they are wool, you can wear them multiple days on a hiking trip or travel without them smelling or feeling dirty. I have all the colors but wish that it was made in a light grey or in more lighter color options.
5
Carl
Been wearing this underneath my uniform in Alaska as a base layer. Its great, Wicks away moisture, is warm but lightweight and breathable, soft and comfortable. Planning on buying more. Only concern is durability, which is a problem that all wools have, as they are washed over time.
Men's lightweight base layers are designed to provide moisture-wicking properties, keeping you dry during physical activities. They offer a snug fit that helps regulate body temperature, making them ideal for layering in various weather conditions. Additionally, they can enhance comfort by reducing chafing and providing a smooth layer against the skin.
Men's lightweight base layers are typically made from synthetic materials such as polyester or nylon, which are known for their moisture-wicking capabilities. Some may also incorporate spandex for added stretch and flexibility. Natural fibers like merino wool can be used as well, offering breathability and temperature regulation.
Men's lightweight base layers are versatile and can be worn in a variety of situations, including outdoor sports, gym workouts, or as part of a layering system during colder months. They are especially useful in activities where temperature regulation and moisture management are important, such as running, hiking, or skiing.
Men's lightweight base layers are designed to be thinner and more breathable compared to heavier options, making them suitable for warmer conditions or high-intensity activities. Heavier base layers provide more insulation and are better suited for colder environments. Choosing between them depends on the climate and the level of activity planned.
When selecting a men's lightweight base layer, consider features such as moisture-wicking technology, breathability, and stretch for comfort. Look for flat seams to reduce chafing and a snug fit that allows for easy layering. Additionally, some base layers may offer added benefits like odor resistance or thermal regulation.
Continue browsing
(12) 
