• Body-Mapped Intraknit Construction Balances Warmth And Freedom Of Movement
• Merino Wool Blend Helps Control Temperature And Move Moisture
• Ventilated Knit Zones Release Excess Heat During High-Output Activity
• Natural Odor Resistance Supports Multi-Day Wear
• 1/4-Zip Neckline Adjusts Airflow And Simplifies Layering

Cold starts feel easier in the Smartwool Men's Intraknit Thermal Merino Base Layer 1/4 Zip. Body-mapped warmth and breathable zones make it a sharp first layer for ski tours, resort laps, and winter hikes where your pace keeps changing. Open the zip on the climb, close it against the wind, and settle into a comfortable rhythm from trailhead to last chair.