
Best selling Functional underwear from Smartwool
On this page you’ll find a ranking of the best Functional underwear from Smartwool. To give you a quick overview, we’ve added the most important product details. This page always stays fresh and updates automatically.
1. Smartwool Merino 250
Change can be a good thing! Smartwool has improved the fit of their 100% Merino pants with new side seams and a curved seam at the back that provides a slimming effect while reducing sagging and excess fabric. The Women's Merino 250 Baselayer Pants are designed to support you in doing what you love. While you feel comfortable, the temperature regulation helps keep you enveloped in incredible comfort.
• Size information: True to size
• Fit: Regular fit
• Type: Long underwear
• Material details: 100% wool
• Material type: Synthetic fiber
• Seams: Reduced seams
Features
• Compression: No
• Thermal function: No
• Padding: No.

2. Smartwool Women's Classic Thermal Merino Base Layer Colorblock 1/4 Zip Boxed
Everything. Everywhere. That's exactly what our Women's Classic Thermal Merino Base Layer Colorblock 1/4 Zip is made for. The possibilities are endless when you wear something so warm and performance-ready. Made from 100% ZQ-certified merino wool, this women's top provides all the natural benefits you need for skiing, hiking, running, or training - all season long. Comfortable.

Smartwool Women's Classic Thermal Merino Base Layer Colorblock 1/4 Zip Boxed
L
3. Smartwool Ms Classic All-Season 1/4 Zip
Smartwool has updated the fit of the Classic All-Season Merino Baselayer Pants to enhance functionality and aesthetics. The ultra-soft merino wool regulates body temperature, provides excellent breathability, and is odor-resistant. What else should a baselayer be able to do? How about smooth flatlock seams to prevent chafing and a wide elastic waistband with fabric covering? With its twist yarn technology, Smartwool has wrapped merino wool around a nylon core, providing extra durability while maintaining the comfort of ultra-soft merino wool against the skin. It has everything you need and more for year-round adventures.
Material:
• Material type: Merino wool
• Contains non-textile parts of animal origin
• Seams: Flatlock seams
• Material: 88% wool, 12% nylon
Features:
• Seat pad: No
• Compression: No
• Thermal function: Yes
• Special features: Antibacterial
Fit & Cut:
• Size information: Size runs true to size
• Fit: Close-fitting cut
Main information:
• Type: Long underwear.

4. Smartwool Merino 150 Baselayer 3/4 Pants
The Herren Merino 150 baselayer 3/4 trousers are best suited for skiing. The product is manufactured by Smartwool and is designed for men.

5. Smartwool Merino 250 Baselayer Bottom
With 250g, the warmest functional underwear from Smartwool is made of merino wool. Merino wool works naturally with the body's own heat and cooling system when worn directly on the skin, allowing you to do what you love comfortably and without odor. The NTS Mid 250g/m² combination is perfect as a single layer for cold days and as a base layer on very cold days.
- Type: Long underpants
- Material: 100% wool
- Size information: Size is normal
- Fit: Narrow
- Details:
- Interlock knit fabric
- Type seams: Flat seams
- Type material: Merino wool
Features:
- Compression: No
- Thermo function: Yes
- Special features: Antibacterial
- Seat pad: No.

6. Smartwool Ms Merino Boxer Brief
This is probably the first piece you'll put on, and it's also one of the most important, as it determines how comfortable you'll feel all day long. The Everyday Exploration Merino men's boxers ensure that you feel good – or at least your underwear does. They are designed to prevent chafing and provide support.
Material:
• Material: 53% wool, 39% polyester, 8% hemp
• Material type: merino wool
• Seams: low-friction seams
Features:
• Compression: yes
• Thermal function: no
• Padding: no
Fit & Cut:
• Size information: true to size
• Fit: regular cut
Main information:
• Type: boxer.

7. Smartwool Merino 150 Boxer Brief
When hiking, trekking, or climbing, you need underwear that feels almost invisible, is soft to the touch, and functional. The best choice for this is underwear made from merino wool, like the Merino 150 Boxer Brief from Smartwool. With these comfortable, form-fitting, and elastic functional shorts, you can fully focus on your outdoor adventure, thanks to high breathability, excellent moisture management, and long-lasting odor resistance.
Merino 150 is Smartwool's lightest, most versatile layer with enhanced durability that regulates body temperature, wicks moisture away from the body, and resists odors.
Core Spun features merino fibers wrapped around a nylon core. This eliminates seams and distortion, ensuring added durability, greater comfort, and a good fit.
• Details:
- Wide, elastic waistband (4 cm)
- Inseam length: approx. 15 cm
- Weight: 91 g
• Type: Boxer
• Material composition: 87% wool, 13% nylon
• Size information: true to size
• Fit: snug fit
Material
• Material type: Merino wool
Features
• Compression: no
• Thermal function: no
• Special features: moisture-wicking
• Seat pad: no.

8. Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip Boxed
We have revised the fit of our Women's Classic Thermal Merino Base Layer 1/4 Zip to enhance functionality while also improving aesthetics. This garment is one of our heaviest base layer tops and the best base layer for cold weather. It is made from 100% responsibly sourced merino wool, features shoulder inserts, and has a flatlock seam construction that minimizes chafing, ensuring you feel comfortable while skiing, hiking, running, and engaging in other activities while regulating your temperature.

Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip Boxed
9. Smartwool Women's Classic Thermal Merino Base Layer Bottom Boxed
100% Merino. 100% capable. Our Women's Classic Thermal Merino Base Layer Bottom is always ready for whatever lies ahead and what comes next. With a fit that enhances functionality while optimizing aesthetics for a variety of body shapes, and a flatlock seam construction that prevents chafing, comfort is never in question. Get one or two of our best base layer pants and conquer the cold with more confidence than ever.

Smartwool Women's Classic Thermal Merino Base Layer Bottom Boxed
XS