Smartwool  Classic Thermal Merino Base Layer Bottoms - Men's

View the 648 reviews with an average rating of 4.7 out of 5 stars
$125.00
Members get an est. $12.50 in rewards

With an improved fit and reliable, resilient merino wool, the men's Smartwool Classic Thermal Merino base layer bottoms will help keep you warm and comfortable as you ski, run and hike the day away.

Color: Charcoal Heather
please select a Size
Quantity
Select size for delivery dates

Members get an estimated $12.50 (10%) back on this item as a part of your annual .

Members get an estimated $12.50 (10%) back on this item as a part of your annual .
To buy,  sign in as an REI Co-op Member or join now.

Features

  • 250-weight Interlock-knit merino wool enhances comfort, breathability, thermoregulation and odor resistance
  • Merino wool–covered elasticized waistband and traditional fly for functional convenience and comfort
  • Flatlock seam construction minimizes chafing

Imported.

View the Smartwool Classic Thermal Merino Product LineView all Smartwool Men's Base Layer Bottoms

Technical Specs

Best Use

Multisport

Fabric

Merino wool

Moisture Wicking

Yes

Fly Opening

Yes

Underwear Weight

Midweight

Inseam (in.)

30 inches

Gender

Men's

Sustainability

Contains ZQ merino wool

Reviews

648 reviews with an average rating of 4.7 out of 5 stars

Be the first to write a review!

Adding a review will require a valid email for verification

Questions & Answers

Loading Questions...
10% co-op member reward: $12$12 Member Reward
$30Member Bonus Card

This purchase pays for membership!

$12

10% Reward

on this and every eligible full-price item*

+

$30

Bonus Card

valid for 30 days after joining*

=

$42

Value

Buy a lifetime $30 membership and make a $50 purchase by Sep 07, 2026.*

Keep shopping