Smartwool Base Layer Tops

Discover the ultimate in comfort and performance with our selection of smartwool base layer tops. Designed for optimal warmth and moisture management, these tops are perfect for layering during outdoor adventures or chilly days. Crafted from high-quality merino wool, they offer breathability and softness against the skin, ensuring all-day comfort. With a variety of styles and fits, you can easily find the ideal base layer to enhance your active lifestyle. Stay warm and dry while enjoying the great outdoors with our premium smartwool base layer tops.

Filter
Sort: Best Selling
Filter
Activity
(2)
(1)
(10)
(16)
Gender
(1)
(16)
(12)
Neckline
(15)
(2)
(1)
(5)
Weight
(8)
(9)
Shirt Type
Size
Color
Price
29 products
View:  All|29 Products
Smartwool Men's Classic Thermal Merino Base Layer Crew Top

Smartwool Men's Classic Thermal Merino Base Layer Crew Top

$115.00

Quick Facts

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...

SmartWool Women's Merino 150 Base Layer Long Sleeve Baselayer Shirt
  • Light Gray Heather
  • Nightfall Blue
  • Black

SmartWool Women's Merino 150 Base Layer Long Sleeve Baselayer Shirt

$90.00

(9)

It did a great job keeping me warm in those temps even with wind. ... The sleeves are long which I love. ... This sweater is comfortable, soft and a great layering piece for the

See all reviews

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 😊

Smartwool Women's Merino 250 Baselayer Top
  • Purple Iris Retro Line
  • Chalk Violet Heather
  • Black

Smartwool Women's Merino 250 Baselayer Top

$115.00

(68)

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...

See all reviews

5 BGRD
[ This shirt is incredible. I wear them daily during the winter time so I wanted multiple. Smart wool shirts are warm and not itchy at all! I wear them hiking as well as under dressy tops to stay warm in the office.

5 reddread
[ I waited forever to get this on sale and now I wished I 'd bought several in different colors! Warm but breathable, and stylish enough to layer with a jacket for a business casual look. I ca n't wait to take this baby out to the slopes!

5 Beez
[ SmartWool is our go- to for liners. It's well fit, cozy, soft and super warm. It does n't itch and make you warm yet is great to wear inside and on mild days out. Got this one for my wife.

5 klili
[ I got this a couple weeks ago and it's been perfect, it's of course a great base layer, but for days when too many layers are n't needed it is perfect as a long sleeve T- shirt. Hoping to get a couple more to round out the winter layers

5 Springtime44
[ I love smartwool products! This is my second of this specific shirt! My first one was a medium, which is perfect for layering, very form fitting. So I purchased a second in a different color in a large to wear everyday!

Smartwool Men's Intraknit Merino 200 1/4 Zip
  • Black/White

Smartwool Men's Intraknit Merino 200 1/4 Zip

$140.00

(2)

slim fit follows contours of the body long sleeve quarter zip base layer clothing perfect for chilly weather 3d- mapped for a near custom fit and freedom of movement merino sport yarn combines the power of merino with the durability and fast dry times of polyester seamlessly knit...

See all reviews

5 Steve
[ I was somewhat uncertain about this since it seemed a bit thin but decided to give it a try since the weather is now dropping below freezing. I love this and wear it almost daily. I generally wear it like a light jacket rather than a baselayer and it is just enough to take the chill off. I also tried it as a baselayer while hiking. It was fantastic. I shed layers while going up to just this and was fine at about 40 degrees. I added a vest when coming back down and not working as hard. Even though I wear it like a jacket, its not going to block any wind so use it under something else if its windy. Overall, I really like this and would 100% buy it again.

5 Klear Fish Hiking
[ Warm, lightweight, moves with your body. No winter hiker should be without. Hiked down to 3 degrees and this base layer kept me warm and dry!

Smartwool Men's Classic Thermal Merino Base Layer Pattern Quarter Zip Pullover
  • Charcoal Heather

Smartwool Men's Classic Thermal Merino Base Layer Pattern Quarter Zip Pullover

$120.00

Quick Facts

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...

Smartwool Men's Intraknit Thermal Merino Base Layer Crew Neck Long Sleeved T-Shirt
  • Black/White
  • Squash
  • Charcoal Black

Smartwool Men's Intraknit Thermal Merino Base Layer Crew Neck Long Sleeved T-Shirt

$130.00

Quick Facts

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...

Smartwool Men's Classic All-Season Merino Base Layer Long Sleeve Top
  • Black

Smartwool Men's Classic All-Season Merino Base Layer Long Sleeve Top

$85.00

(1)

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

See all reviews

5 MAJB
Great quality, ordered for my husband for Christmas. He loved it... would order again.

Smartwool Men's Classic All-Season Merino Base Layer Crew Boxed
  • Black

Smartwool Men's Classic All-Season Merino Base Layer Crew Boxed

$90.00

Quick Facts

exclusive of decoration ... classic all- season merino: smartwool's most versatile year- round fabric features a nylon core for durability, while keeping soft 100% merino wool next to skin slim fit is intended to follow the contours of the body lightweight merino jersey fabric uses a recycled nylon...

Smartwool Men's Classic All-Season Merino Base Layer 1/4 Zip Long Sleeve Top
  • Black

Smartwool Men's Classic All-Season Merino Base Layer 1/4 Zip Long Sleeve Top

$90.00

Quick Facts

side seams help minimize chafing while wearing a pack and offer a body- enhancing fit. ... this top uses their lightest- weight merino fabric wrapped around a nylon core to increase durability, while still keeping the 100% soft, merino wool you love next to

Smartwool Men's Merino Classic All-Season Base Layer Long Sleeve
  • Fern Green
  • Sable Brown/Black
  • Black

Smartwool Men's Merino Classic All-Season Base Layer Long Sleeve

$90.00

(7)

Love the fit and breathability, a bit less wool and more synthetic than other brands I wear, but it works for me since this is a hiking base layer that I wear multiple times without washing- does n't get stretched out and dries

See all reviews

5 Gandhi
[ Bought for a hiking baselayer. Expensive but I think its worth it. More comfy in the cold than a synthetic baselayer. Not a compression shirt. I use under a fleece. Does n't smell after a full day of hiking.

5 Jackie28
[ This is my second purchase of a Smartwool Men's Classic All- Season Merino LS Base Layer- this is a great lighter weight item that breathes well but is warm enough when it gets cooler.

5 Rover Dog
[ I own several Smartwool tops but this is one of my favorites. The slightly heavier material is ideal for stand alone yet still layers nicely. Never bulky. Quality is what you would expect from Smartwool. Excellent.

5 Tony99
[ I have tried more than one brand of merino tops Keep coming back to smart wool for best quality and fit. They also keep their shape. The price is inline with other brands

5 Thunderbolt417
[ I 've long been an unabashed devotee of all Smartwool products but their base layers, like the classic all- season merino long sleeve shirt, is truly the best money can buy. Since my days of living in the frigid mountains of northern Utah, I 've discovered the breathability of Smartwool's all- season merino long sleeve base layer makes it both the perfect shirt for keeping warm on winter's coldest days as well as ideal workout apparel. Smartwool base layers also make the best all- season pajamas imaginable. The all- season merino long sleeve shirt feels like a gentle hug when you slip it on, and remains comfortable until you 've completed your workout — whether it be a 3- mile hike in the frigid cold or a home gym weight training session. Smartwool has long been the gold standard for merino wool apparel. When you purchase your first Smartwool product, you 'll understand why.

Smartwool Women's Intraknit™ Thermal Max Merino Base Layer 1/4 Zip
  • Black

Smartwool Women's Intraknit™ Thermal Max Merino Base Layer 1/4 Zip

$155.00

Quick Facts

insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort 100% merino yarn provides the full power of merino with moisture management, insulation, thermoregulation, and odor control insulating terry loops are seamlessly paired with mesh ventilation in...

Smartwool Men's Intraknit Thermal 1/4 Zip
  • Black

Smartwool Men's Intraknit Thermal 1/4 Zip

$155.00

Quick Facts

meet the men's intraknit™ thermal max merino base layer 1/4 zip. ... this bulk- free, 100% merino wool thermal layer brings a new dimension to active winter

Smartwool Men's Merino 250 Baselayer Crewneck Shirt

Smartwool Men's Merino 250 Baselayer Crewneck Shirt

$115.00

(99)

Perfect base for a layering system ... This shirt was so soft and comfortable. ... Just enough to keep me nice and warm without being too overbearing. ... Warm and

See all reviews

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

Smartwool Women's Classic Thermal Merino Baselayer Long Sleeve Shirt
  • Chalk Violet Heather
  • Black Deco Floral
  • Black

Smartwool Women's Classic Thermal Merino Baselayer Long Sleeve Shirt

$115.00

(1)

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

See all reviews

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!

Smartwool Women's Intraknit Thermal Merino Pattern Baselayer Top
  • Black

Smartwool Women's Intraknit Thermal Merino Pattern Baselayer Top

$130.00

Quick Facts

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

Smartwool Men's Thermal Merino 1/4 Zip Pullover
  • Black
  • Mink Heather

Smartwool Men's Thermal Merino 1/4 Zip Pullover

$120.00

Quick Facts

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-...

Smartwool Men's Intraknit Merino 200 Pattern Crewneck Baselayer Top
  • Honey Gold Mountain
  • Deep Navy Mountain Scape

Smartwool Men's Intraknit Merino 200 Pattern Crewneck Baselayer Top

$130.00

Quick Facts

Great layer piece as well as a dress look under the Men's Intraknit™ Merino Sport Fleece Full Zip Hoodie. The hand and softness of this fabric brings Smartwool back into the top of the line

Smartwool Women's Merino 250 Pattern 1/4 Zip Baselayer Shirt
  • Jade Marble

Smartwool Women's Merino 250 Pattern 1/4 Zip Baselayer Shirt

$115.00

(10)

100% merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance ... garment weight: 236g( 8.

See all reviews

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.

SmartWool Women's Intraknit Active Base Layer Long Sleeve Shirt
  • Lead

SmartWool Women's Intraknit Active Base Layer Long Sleeve Shirt

$110.00

Quick Facts

Love that something fits tall women, is functional, comfortable, and stylish. ... Love the fit- comfortable. ... Perfect and pretty base layer great for

Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew Neck T-Shirt
  • Deep Navy/Charcoal
  • Winter Moss/Charcoal

Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew Neck T-Shirt

$130.00

(2)

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...

See all reviews

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.

Smartwool Women's Intraknit Thermal Colorblock 1/4 Zip
  • Charcoal
  • Mink
  • Black/Charcoal

Smartwool Women's Intraknit Thermal Colorblock 1/4 Zip

$140.00

Quick Facts

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...

Smartwool Women's Intraknit Thermal Merino Crew Baselayer Top

Smartwool Women's Intraknit Thermal Merino Crew Baselayer Top

$130.00

Quick Facts

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

SmartWool Men's Classic Thermal Merino 1/4 Zip Base Layer
  • Winter Moss Summit Soul
  • Charcoal/Honey Gold

SmartWool Men's Classic Thermal Merino 1/4 Zip Base Layer

$120.00-$145.00

Quick Facts

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...

Smartwool Women's Thermal Merino Rib Top
  • Black

Smartwool Women's Thermal Merino Rib Top

$130.00

Quick Facts

odor resistance ... men ’s relaxed fit top interlock knit fabric breathability and thermoregulation drop shoulder

Smartwool Women's Classic Thermal Merino Mock Neck
  • Chalk Violet Heather
  • Deep Navy

Smartwool Women's Classic Thermal Merino Mock Neck

$140.00

Quick Facts

add one of our best cold- weather base layers to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or

Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip
  • Winter Moss

Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip

$140.00

Quick Facts

new to our innovative intraknit™ line is the men's intraknit™ thermal merino base layer 1/4 zip. ... insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort: temp rating of less than 25 degrees seamlessly knit mesh ventilation 3d mapping results in near...

Smartwool Women's Intraknit™ Thermal Merino Base Layer Hoodie
  • Deep Navy/Arctic Green
  • Black/Charcoal
  • Charcoal/Coral Reef

Smartwool Women's Intraknit™ Thermal Merino Base Layer Hoodie

$180.00

Quick Facts

insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort during high- intensity activities seamlessly knit mesh ventilation 3d mapping results in near custom fit and freedom of movement helmet- compatible hood and extended collar thumbholes at cuffs...

Smartwool Men's Intraknit™ Thermal Merino Base Layer Hoodie
  • Black/Charcoal
  • Charcoal/Winter Moss

Smartwool Men's Intraknit™ Thermal Merino Base Layer Hoodie

$180.00

Quick Facts

insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort during high- intensity activities seamlessly knit mesh ventilation 3d mapping results in near custom fit and freedom of movement helmet- compatible hood and extended collar thumbholes at cuffs...

Smartwool Youth Classic Thermal Merino Base Layer Crew
  • Pacific Blue
  • Black Ski Day
  • Pacific Blue Floral

Smartwool Youth Classic Thermal Merino Base Layer Crew

$65.00

Quick Facts

kids' classic thermal merino base layer crew is made of 100% responsibly sourced merino wool to help your little ones stay comfortable on snow days and activities in the

You may also like...