Women's Smartwool Classic Thermal Merino Base Layer Crew
Warmth that moves with you
Named Best Overall Base Layers for Women by GearJunkie for 2025–2026, the new and improved Women's Classic Thermal Merino Base Layer Crew brings trusted merino performance to every cold-weather adventure. It’s made from 100% Merino wool for naturally breathable warmth, moisture management, and a soft feel against your skin.
From first chair to final summit, the updated fit helps you move comfortably while new color options add a polished look to your winter layers. Shoulder panels improve functionality, and flatlock seam construction helps reduce chafing when you’re skiing, hiking, climbing, or biking.
Why you'll reach for it all winter
- 100% Merino wool for breathable, temperature-regulating warmth
- Enhanced fit for comfortable, unrestricted movement
- Shoulder panels add functionality and durability
- Flatlock seams help prevent chafing
- A versatile cold-weather base layer for skiing, hiking, climbing, and biking
Pull it on when the temperature drops and enjoy the difference a thoughtfully designed merino base layer makes, from everyday winter mornings to full days outside.