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The Smartwool Classic Thermal Merino 1/4 Zip is a performance base layer designed to deliver dependable warmth and comfort in cold conditions. Made with Merino wool, it provides natural temperature regulation, moisture management, and odor resistance for long days on the mountain. The quarter-zip design allows you to adjust ventilation as activity levels and temperatures change.
✔ Merino wool provides natural warmth and temperature regulation
✔ Moisture management helps keep you comfortable during active use
✔ Naturally odor-resistant fabric is ideal for multi-day trips
✔ Quarter-zip neckline allows adjustable ventilation
✔ Soft, next-to-skin feel for all-day comfort
✔ Breathable construction supports active movement
✔ Comfortable layering under ski jackets and shells
✔ Versatile design works for skiing, snowboarding, hiking, and winter travel
Category: Thermal Base Layer Top
Fabric: Merino Wool
Neck: Quarter-Zip
Performance: Warmth / Breathability / Moisture Management / Odor Resistance
Fit & Feel: Soft Next-to-Skin Comfort
Layering: Designed for Use Under Midlayers, Shells, and Insulated Jackets
Best For: Skiing, Snowboarding, Hiking, and Cold-Weather Activities
Style: Technical Alpine Base Layer
