Meet the Men's Intraknit Thermal Max Merino Base Layer 1/4 Zip. This bulk-free, 100% Merino wool thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex zones, and Merino comfort, it'll be the first thing you grab when you need a warmer layer for your high-intensity, cold-weather adventures.

• Slim Fit
• 3D mapping results in near custom fit and freedom of movement while ribbed elbows provide added durability
• Mesh ventilation seamlessly knit in gender-specific zones designed to keep the body dry and comfortable
• Engineered construction uses knit structures to enhance performance with lighter weights and cleaner finish
• Merino Sport yarn combines the power of Merino with the durability and fast dry times of polyester
  

Smartwool Intraknit Thermal Mens 1/4 Zip 2025