How to Choose Base Layers
Smartwool Intraknit Thermal Merino Base Layer Bottoms - Men's
$130.00
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Built to flex and follow you like a shadow, the men's Smartwool Intraknit Thermal Merino base layer bottoms put warmth first, while 3D knit mesh ventilation helps keep you dry and comfortable.
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- Made with Merino Sport yarn to offer the power of merino paired with the durability and fast dry times of polyester—perfect for skiing, running and high-intensity training
- Intraknitâ„¢ technology offers insulation, articulation and ventilation to amplify movement and comfort during high-intensity activities
- Seamlessly knit mesh ventilation is designed to keep you dry and comfortable
- 3D mapping provides maximum mobility while ribbed elbows provide added durability
- Smartwool slim fit is intended to follow the contours of the body
- Size medium inseam is 28.75 in. (73 cm)
Imported.
View the Smartwool Intraknit Product LineView all Smartwool Men's Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | 52% merino wool/44% polyester/2% elastane/2% polyamide |
| Moisture Wicking | Yes |
| Underwear Weight | Lightweight |
| Inseam (in.) | 28.75 inches |
| Gender | Men's |
| Sustainability | Contains ZQ merino wool |
Smartwool Clothing - Men's
| S | M | L | XL | XXL | |
|---|---|---|---|---|---|
| Chest | 36 - 38 | 39 - 41 | 42 - 44 | 45 - 48 | 49 - 51 |
| Sleeve Length | 31 - 32 | 32 - 33 | 33 - 34 | 34 - 35 | 35 - 36 |
| Waist | 29 - 31 | 32 - 34 | 34 - 37 | 38 - 40 | 41 - 44 |
| Hip | 36 - 38 | 39 - 41 | 42 - 44 | 45 - 48 | 49 - 51 |
| Inseam | 30 - 31 | 31 - 32 | 32 - 33 | 33 - 34 | 34 - 35 |
Sizing Notes
Measurements are stated in inches.
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Most Helpful Favorable Review
Wanted to love these
Nancy2 years ago
Loved the warmth of this base layer and the flexability. However after a two year period they fell apart. They were used for skiing and long distance cycling only during cold weather. I would say average use. I turned in a claim included pictures to Smartwool and it was declined. I decided to purchase again because of the warmth & comfort.
Nancy
Carlsbad, CA
9 people found this review helpful
Most Helpful Critical Review
Wanted to love these
Nancy2 years ago
Loved the warmth of this base layer and the flexability. However after a two year period they fell apart. They were used for skiing and long distance cycling only during cold weather. I would say average use. I turned in a claim included pictures to Smartwool and it was declined. I decided to purchase again because of the warmth & comfort.
Nancy
Carlsbad, CA
9 people found this review helpful
Customer Images
Nancy
Carlsbad, CA
Wanted to love these
2 years ago
Loved the warmth of this base layer and the flexability. However after a two year period they fell apart. They were used for skiing and long distance cycling only during cold weather. I would say average use. I turned in a claim included pictures to Smartwool and it was declined. I decided to purchase again because of the warmth & comfort.
Age:55–64
Weight:125–150 lbs.
Height:5'4"
No, I do not recommend this product
all season cyclist
southeastern Wisconsin
Makes a HUGE difference on my cold-weather rides
2 years ago
I replaced my previous base layer with the Smartwool Intraknit Thermal Merino base layer - top and bottom. They are comfy, well-made, and fit very well. On cold-weather bike rides, I wear them under REI Junction Hybrid cycling pants & Junction Hybrid jacket, with an extra layer and REI cycling windbreaker. Just got home from a 30-mile hilly bike ride in 35 degrees, here in Wisconsin. I was plenty warm with this combination. Previously, I used a different base layer, and upgrading to the Smartwool Intraknit Merino base layer made a bigger difference to my comfort and warmth on the ride than any other upgrade I've made to my cold weather riding attire. They're not cheap, but they're occasionally on sale (like right now, mid Nov '22). Honestly though, I would have paid full price. They're comfortable, very well-made, and all of my various Smartwool products have lasted me years and years. Highly recommended for cold-weather bike rides, walks, or hikes.
Height:6'3"
Age:55–64
Weight:225–250 lbs.
Yes , I recommend this product
Zeejet
California
Excellent quality and utility - unusually high cut
2 years ago
An excellent product with a compromise between the benefits/draw-back of PE and merino fabrics. My main criticism is the extremely high-cut waist that rides all the way up to the belly button. It should be about two inches shorter than it currently is. Fit (Men's Medium): Great in the legs but unusually high waist band. I'm 5'9", 165lb, 31" Waist, Climber's Build. Pros: + Excellent wicking and drying times + Warm + Quality build Cons: - Unusual cut and fit at the waist - While already very soft to the touch, just a tad coarse compared to Icebreakers products.
Height:5'9"
Age:25–34
Weight:150–175 lbs.
Yes , I recommend this product
rwillie6
San Francisco
Nice material, but cut like maternity pants
2 years ago
The material is really soft and mostly comfortable (a slight itch, but I could get used to that). The problem is the cut. I don't know what human this was measured for, but it's bad: * The waist band is really thick, super stiff, and uncomfortably tight * There's way too much material between the crotch and waistband. It means either the crotch is way too low and rubs / restricts leg movement, or the waistband is hiked up above your belly button. The only comparison I can make is to women's maternity pants. Like, "support your belly" high-waisted. * If you don't hike them way up, and the crotch is in the right place, then there's like 2" of extra fabric in front and maybe 1" in back. But if you do hike them way up, then they're too short at the ankle! The material makes me want to like them, but the cut ruins that. Very disappointing, definitely returning.
Age:35–44
Weight:150–175 lbs.
Height:6'0"
No, I do not recommend this product
Freezer Man 5000
Warm and Comfortable
2 years ago
These are really comfortable, keep my legs warm under my jeans, and basically are just the bee's knees as far as I'm concerned. I'm going to get another pair of them.
Height:6'0"
Weight:150–175 lbs.
Yes , I recommend this product
Dena
Bend, OR
Mens long underwear - but no fly?
1 year ago
Very warm and comfortable, but odd there is no fly as they are mens pants. We were confused at first and thought we accidentally bought the women's ones.
Age:45–54
Weight:175–200 lbs.
Height:5'9"
Yes , I recommend this product
Erik
Warm and well made
2 years ago
I wanted a warmer pair for for cross country skiing, hiking and walking the dog when -10below zero to 15 degree so tee are the ticket wit a heavy pair of pants.
Efonzie
Reno, Nv
Keeps me warm on cold morning bike commutes
8 months ago
I bought a pair of these on a whim last year and I must say they are incredibly comfortable and warm. I've been wearing them to stay warm on my bike commute now that the weather has started to get colder and they have definitely done their job well. I've read some of the reviews complaining about durability, but I haven't noticed any issues... Yet! With that said, I'm going to buy another pair so I can have one ready to use while the other is in the wash.
Age:25–34
Weight:125–150 lbs.
Height:6'0"
Yes , I recommend this product
Julius
Why men's pants have no fly?
2 years ago
This men's pants does not have a fly. Other reviews stating the cut feels similar to a women's (or for pregnancy). I wonder if this is a women's pant sold under the disguise of men's.
NorthBender
Tight fit, no flap; Not good for men
5 months ago
This baselayer was nice and warm, but they were way tighter than my other pair of smart wool base layers. These are supposed to be for men, but there is no front flap to allow easy access for going to the bathroom. I gave these away.
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