Smartwool base layers: Merino wool for all sizes

Known for its merino wool base layers, Smartwool guarantees you will stay warm and dry, whatever your waist size.

Smartwool Men's Classic Thermal Merino Bottom Base Layer — Bearcub Outfitters

Smartwool Women's Base Layers - Classic Thermal Merino Crew

Smartwool Classic Thermal Merino 250 Base Layer Crew - Womens

Smartwool Classic Thermal Merino Base Layer 1/4 Zip Plus - Women's

Smartwool Men's Classic Thermal Merino Base Layer Crew – Trailful Outdoor Co.

Smartwool Classic All-Season Merino 1/4-Zip Base Layer - Men's - Clothing

Smartwool Men's Classic Thermal Merino Bottom Base Layer — Bearcub Outfitters

Smartwool Classic Thermal Merino Bottom Review Tested By, 59% OFF

Smartwool Classic Thermal Merino Bottom Review Tested By GearLab

Smartwool Merino 150 Baselayer Long Sleeve Crew Men's - Trailhead