The store will not work correctly when cookies are disabled.

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

Select Your Country

How would you like to proceed?

Please be advised that changing your location while shopping will remove all contents from shopping bag.

Ship To Another Country Ship To Canada Ship To United States

Choose Your Language:

Smartwool Official Store

SALE
- SHOP NOW
- WOMENS
- MENS
- KIDS
- ACTIVITY
WOMENS
MENS
KIDS
- COLLECTION
  - Apparel
  - Socks
  - Accessories
  - Multi-Packs
  - Shop All
- SHOP BY ACTIVITY
ACTIVITY
OUTLET
- CATEGORIES
- GENDER
  - Mens
  - Womens
  - Kids
- SOCKS BY SIZE
- APPAREL BY SIZE
- ACTIVITY
SOCK FINDER

Search

Search

Free Shipping on All Orders — Jan 22–25!

WINTER SALE - UP TO 40% OFF

EASY RETURNS & FREE SIZE CHANGE

Track my order Tracking

Language

en

Switzerland German
Switzerland French

Your Currently Country

North America

Canada
United States

: Country:

: Choose Your Language:

Home
Baselayers
Classic Thermal

Classic Thermal

Classic Thermal | SMARTWOOL

Login

Connect with

OR

If you have an account, sign in with your email address.

Email

Password

Forgot Your Password?

Create An Account?

Forgot Password

Please enter your email address below to receive a password reset link.

Email

Create New Account

New Customers

First Name

Last Name

Email

Sign Up for Newsletter

Password

Confirm Password

57 items

Page

You're currently reading page 1
Page 2
Page 3
Page Next

Show

per page

NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Bottom

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
NEW

100% MERINO

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

Special Price CHF 97.93

-30%
Regular Price CHF 139.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Bottom

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
100% MERINO

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

Special Price CHF 83.94

-40%
Regular Price CHF 139.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Bottom Plus

Special Price CHF 90.93

-30%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 90.93

-30%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 90.93

-30%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 90.93

-30%
Regular Price CHF 129.90
NEW

100% MERINO

Women's Classic Thermal Merino Base Layer Crew

CHF 129.90
NEW

100% MERINO

Men's Classic Thermal Merino Base Layer Hoodie

Special Price CHF 99.54

-40%
Regular Price CHF 165.90
100% MERINO

Men's Classic Thermal Merino Base Layer Colorblock Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
100% MERINO

Women's Classic Thermal Merino Base Layer Bottom

Special Price CHF 90.93

-30%
Regular Price CHF 129.90
NEW

100% MERINO

Men's Classic Thermal Merino Base Layer Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
100% MERINO

Women's Classic Thermal Merino Base Layer Crew

Special Price CHF 90.93

-30%
Regular Price CHF 129.90
NEW

100% MERINO

Men's Classic Thermal Merino Base Layer Crew

Special Price CHF 77.94

-40%
Regular Price CHF 129.90
NEW

100% MERINO

Kids' Classic Thermal Merino Base Layer Bottom

Special Price CHF 45.54

-40%
Regular Price CHF 75.90

You've viewed of products

57 items

Page

You're currently reading page 1
Page 2
Page 3
Page Next

Show

per page

Filter and Sort

Gender

Mens 29 items
Womens 29 items
Kids 9 items

Product Type

Base Layer Bottom 4 items
Base Layer Bottoms 17 items
Base Layer Crew 30 items
Base Layer Hoodies 4 items
Base Layer ¼ Zip 15 items

Color

Red 1 item
Yellow 3 items
Orange 1 item
Purple 2 items
Green 5 items
Grey 17 items
Black 24 items
Blue 12 items
Pink 2 items

Size

Fit

Regular 1 item
Slim 64 items
Slim (Plus Size) 2 items

Activity

Everyday Casual 11 items
Snowboarding 66 items
Everyday Athletic 10 items
Mountaineering/Climbing 10 items
Hiking 64 items
Biking 58 items
Running 58 items
Skiing 66 items

Collection

Classic Thermal Merino 67 items

Ideal Temperature

Cold (< 5°) 67 items

Categories

Apparel 67 items

Sleeve Length

Long Sleeve 49 items

View More

Currently filtering by

Collection Classic Thermal Merino Remove This Item

Sort By

Price (ascending)
Price (descending)

Filter by Close

Clear All Apply

SUBSCRIBE TO OUR NEWSLETTER

Be updated about new arrivals and promotions, get inspired by our news

ENJOY A SPECIAL 15% OFF YOUR FIRST PURCHASE!

Newsletter

Sign Up for Our Newsletter:

Shop

Men
Women
Kids
Base Layers
Sock Finder
Multi-Packs
Outfit Your Adventure
New Arrivals

Our Merino

Merino Wool Apparel
Merino 101
Classic Thermal Merino Collection
All-Season Merino Collection
Merino Wool Socks
Merino Wool Accessories
Merino Must Haves
Better Socks Naturally
Intraknit Merino Collection

Help

Contact Us
FAQ
Order Status
Orders & Payments
Shipments
Returns and Refunds
Wash & Care
Terms & Conditions
Privacy Policy
Cookie Policy
Declaration of Conformity

About us

Our Story
Products & Fabric Technologies
Smartwool Athletes
Store Locator
Advocacy Program
Sustainability Targets
Second Cut™ Project

Follow us:

Secure payment:

COPYRIGHT © 2026 Smartwool, a VF Brand ATTN: 3495 Airport Circle Steamboat Springs, Colorado 80487 | Powered by FiloBlu

Loading...

SUBSCRIBE TO OUR NEWSLETTER

Subscribe to our newsletter now to get special previews of new collections

Email

First Name

Last Name

Date of Birth

Gender

Country

As an interested party, having read the Privacy Policy statement ,drawn up pursuant to European regulation 2016/679, I expressly consent to the processing of my personal data for commercial purposes by SMARTWOOL, including sending marketing communications (using telematic methods - such as for example newsletters and e- mail with invitations and commercial communications - and traditional methods, such as paper mail)