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Smartwool Men's Classic Thermal Merino Wool Base Layer Crew (Slim Fit)

4.7 395 ratings

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Price:

$104.96 $115.00 Free Returns on some sizes and colors

Free 7-day try-on available for some sizes and colors.
Free shipping & returns. Learn more

Color: Black

Size Chart

US Wool Base Layer Crew

Brand Size	Chest (in)	Waist (in)	Hip (in)	Length (in)
S	36 - 38	29 - 31	36 - 38	31 - 32
M	39 - 41	32 - 34	39 - 41	32 - 33
L	42 - 44	35 - 37	42 - 44	33 - 34
XL	45 - 48	38 - 40	45 - 48	34 - 35
XXL	49 - 51	41 - 44	49 - 51	35 - 36

Product details

Fabric type

100% Merino Wool

Care instructions

MACHINE WASH WARM GENTLE CYCLE. WASH WITH LIKE COLORS.

Origin

Made in the USA

Closure type

Pull On

About this item

COLD WEATHER BASE LAYER. Keep your ski or hiking boots free of bulk and friction with our 3/4 Bottom. Merino wool provides ultimate comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for layering.

SLIM FIT. Designed to meet the demands of outdoor adventuring, these slim fit bottoms show off a slimming silhouette while offering unrestricted movement through the legs. Inseam: 21.5"

CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a Merino wool construction that helps move moisture away from skin to keep you warm and dry.

FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — interlock knitting enhances breathability, thermoregulation and moisture-wicking while flatlock seams minimize chafing for greater comfort.

GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity.

From the brand

Product Description

Smartwool high performance merino wool apparel for men, women and kids.

The best gear for nature. High quality performance outdoor apparel made out of marino wool.

Merino wool is a sustainable, natural fiber that is thinner and softer than regular wool.

Merino wool, is super soft, resists odor, keeps you dry, and is renewable.


	Men's Classic Thermal Merino Base Layer Crew	Hike Classic Edition Light Cushion Crew Socks	Women's Classic Thermal Merino Base Layer 1/4 Zip	Women's Classic Thermal Merino Base Layer Bottom	Hike Classic Edition Light Cushion Crew Socks	Women's Run Zero Cushion Low Ankle Socks
			See Details		See Details
Customer Reviews	24	629	1	566	632	362
Price	$29.99	$20.00	—	$63.00	—	$22.99
Multiple Color Options	✓	✓	✓	✓	✓	✓

Smartwool is creating a climate-positive way of doing business through sustainable farming.

Product details

Package Dimensions ‏ : ‎ 11.02 x 9.92 x 1.46 inches; 9.59 ounces
Item model number ‏ : ‎ Smartwool
Department ‏ : ‎ mens
Date First Available ‏ : ‎ September 19, 2020
Manufacturer ‏ : ‎ Smartwool
ASIN ‏ : ‎ B08BDQK37G

Best Sellers Rank: #210,147 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry)
- #40 in Men's Base Layers

Customer Reviews:
4.7 395 ratings

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Customer reviews

4.7 out of 5

395 global ratings

How customer reviews and ratings work

Customers say

Customers like the comfort, quality, fit and weight of the shirt. They mention that it's very soft, keeps them very warm, but is breathable enough to wear in the house all day. Some appreciate the warmth. That said, opinions are mixed on value.

AI-generated from the text of customer reviews

19 customers mention17 positive2 negative

Customers like the warmth of the shirt. They mention that it's soft, comfortable, and keeps them warm without the itch. Some say that it is the best cold weather workout shirt ever and an awesome cool weather shirt.

"This baselayer top is awesome, is very warm, and comfortable to wear all day. It's long so it easily tucks in and stays that way...." Read more

"...At almost 50% off this is an incredible value and I am cozy and warm this winter which equals happiness :)The medium shirt fits me perfectly...." Read more

"These are soft and warm. I gave them as a gift and he really likes them. I think they are a bit overpriced." Read more

"These kept me comfortable and warm without the itch...." Read more

13 customers mention13 positive0 negative

Customers like the comfort of the shirt. They mention it's well-made, has a great feel to it, and is very soft. Some say it'll keep them warm but is breathable enough to wear in the house all day.

"This baselayer top is awesome, is very warm, and comfortable to wear all day. It's long so it easily tucks in and stays that way...." Read more

"These are soft and warm. I gave them as a gift and he really likes them. I think they are a bit overpriced." Read more

"These kept me comfortable and warm without the itch...." Read more

"Very soft shirt, fits well & Ill more than likely buy another" Read more

8 customers mention8 positive0 negative

Customers like the fit of the shirt. They mention that it's a great fit, surprisingly light, and very warm. Customers also say that the long waist hugs their hips and keeps the wind from blowing.

"...Or, if you don't tuck it in, the long waist hugs your hips and keeps the wind from blowing up into your open coat...." Read more

"...The medium shirt fits me perfectly. I am 5’9” and about 145 lbs...." Read more

"...Tried it on again, no shrinkage, same fit. It's 250 weight and doesn't feel thick or heavy. Very satisfied...." Read more

"Very soft shirt, fits well & Ill more than likely buy another" Read more

7 customers mention7 positive0 negative

Customers are satisfied with the quality of the shirt. They mention that it is durable, well made, and has a great feel to it. Some say that the material is excellent for a base layer and that it fits as expected.

"...So while this is expensive, it has lasted and is great quality...." Read more

"...It's 250 weight and doesn't feel thick or heavy. Very satisfied. Should be great fly fishing in Alaska this April." Read more

"Excellent material for a base layer. I am old and you know how old people are....they stay cold all the time! Not with this Smartwool base layer!..." Read more

"...They are durable, well made and have a great feel to them." Read more

7 customers mention7 positive0 negative

Customers like the weight of the shirt. They say it's very light, and doesn't feel thick or heavy. Some customers also mention that the shirt has slim and long sleeves.

"...Tried it on again, no shrinkage, same fit. It's 250 weight and doesn't feel thick or heavy. Very satisfied...." Read more

"Slim and long sleeves. My tall husband who struggles to find shirts loves this and wears it most days ." Read more

"...Hard to describe warm without getting hot, lightweight...." Read more

"This sweater is just what I was looking for. Light weight warmth." Read more

11 customers mention4 positive7 negative

Customers are mixed about the value of the shirt. Some mention it's worth the cost, while others say it'd be better off getting ripped off by Amazon.

"...I gave them as a gift and he really likes them. I think they are a bit overpriced." Read more

"...Definitely recommend. It's worth the cost. Also, the price on this in Oct 2021 was $20 cheaper than the 2nd one I bought in January...." Read more

"...Not with this Smartwool base layer! No drafts, just cozy. Pretty damn expensive, but, all in all, worth it...." Read more

"...At almost 50% off this is an incredible value and I am cozy and warm this winter which equals happiness :)The medium shirt fits me perfectly...." Read more

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Top reviews from the United States

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Jeff K

Very good quality, great fit. Expensive, but worth it...

Reviewed in the United States on February 10, 2022

Size: X-LargeColor: BlackVerified Purchase

This baselayer top is awesome, is very warm, and comfortable to wear all day. It's long so it easily tucks in and stays that way. Or, if you don't tuck it in, the long waist hugs your hips and keeps the wind from blowing up into your open coat. This keeps you very warm, but is breathable enough to wear in the house all day. Wearing this in the house allows me to keep my heat much lower saving me $$$ on my utility bill. So while this is expensive, it has lasted and is great quality. I bought a 2nd one because I wear mine so often now I hate being without when I have to wash the one. Btw, I wear this over a cotton shirt, which allows me to wear it multiple days without needing to wash it more frequently. I think this too will make the life be extended. Definitely recommend. It's worth the cost. Also, the price on this in Oct 2021 was $20 cheaper than the 2nd one I bought in January. Not sure if that's a result of the inflation we're seeing now or because it's "in season" and naturally higher cost. I'm going to keep an eye on them and see if the cost drops in July when they are less likely to be selling.

3 people found this helpful

Helpful

nicolas columbo

Soft and warm!

Reviewed in the United States on January 10, 2024

Size: MediumColor: BlackVerified Purchase

I have been very pleased with the Smartwool purchases that I have made through Amazon. I don’t know why the mediums have been on sale this winter but it has worked out very nicely. At almost 50% off this is an incredible value and I am cozy and warm this winter which equals happiness :)
The medium shirt fits me perfectly. I am 5’9” and about 145 lbs. the medium bottoms are a little big but for the price I’m still very satisfied.

Thanks!

Helpful

Mollie

long underwear

Reviewed in the United States on January 27, 2024

Size: XX-LargeColor: Charcoal HeatherVerified Purchase

These are soft and warm. I gave them as a gift and he really likes them. I think they are a bit overpriced.

Helpful

Fitz

Great fit, surprisingly light and very warm.

Reviewed in the United States on January 12, 2023

Size: MediumColor: BlackVerified Purchase

I tried this on when I received it and the fit is perfect (Medium, I'm 5'8", 165lbs). I then washed it (gentle cycle, warm water) and laid it out to dry. Tried it on again, no shrinkage, same fit. It's 250 weight and doesn't feel thick or heavy. Very satisfied. Should be great fly fishing in Alaska this April.

2 people found this helpful

Helpful

Walt B.

A bit pricey, but amazing fabric that dosnt absorb body oder

Reviewed in the United States on April 22, 2023

Size: LargeColor: Charcoal HeatherVerified Purchase

These kept me comfortable and warm without the itch. And you can wear them numerous days if your on vacation and there's no Laundry facility anywhere. I wore one 5 days, and not hint of body oder, even after eating Italian food with Garlic. Lol

Helpful

Allen C

great deal when you can find them on sale

Reviewed in the United States on February 23, 2024

Size: MediumColor: BlackVerified Purchase

Very soft shirt, fits well & Ill more than likely buy another

Helpful

engineer

Comfortable warmth

Reviewed in the United States on February 3, 2024

Size: X-LargeColor: BlackVerified Purchase

Very comfortable for a woolen garment

Helpful

Scott Novis

This thing is soft, comfortable, thin, light, and it will keep you warm

Reviewed in the United States on March 6, 2022

Size: X-LargeColor: BlackVerified Purchase

I first learned about this baselayer from James Clear and I fell in love with it. In fact this is my second because I wore my first one so much it got a hole in the sleeve from a suitcase. I frequently where it as a base layer under a shirt, or T-shirt and other times as a sweater, pulling it over a T-shirt. It never seems to smell and it is shockingly warm for how thin it is. Smartwool is magical.

Helpful

Top reviews from other countries

Tracy

Smartwool...fantastic quality as always!

Reviewed in Canada on January 6, 2021

Size: XX-LargeColor: BlackVerified Purchase

Bought this for my husband, spends hours on end in a treestand in the fall and winter. We both love Smartwool products and as usual, this underlayer does not disappoint. Had previously worn a 150 underlayer and upgraded him to a 250!

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Smartwool Men's Classic Thermal Merino Wool Base Layer Crew (Slim Fit)

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