Take on cold-weather training in comfort with the Smartwool Men’s Intraknit™ Thermal Merino Base Layer 1/4 Zip. This slim-fit performance layer is built with Merino Sport yarn, blending the natural warmth, breathability, and odor resistance of Merino wool with the durability and quick-dry performance of polyester. Intraknit™ technology integrates targeted insulation, articulation, and ventilation, while 3D mapping provides a near-custom fit that moves with you. With a lighter weight, sleek finish, and easy ventilation from the quarter-zip design, this base layer is made to perform during skiing, hiking, or high-intensity winter activities.

Key Features

• Slim fit follows body contours for layering
• Quarter-zip design for easy temperature regulation
• Merino Sport yarn combines Merino wool comfort with polyester durability
• Intraknit™ technology integrates insulation, articulation, and ventilation
• Seamlessly knit mesh zones enhance breathability and moisture management
• 3D mapping ensures mobility and freedom of movement
• Naturally odor-resistant and temperature-regulating Merino wool