Smartwool Women's Intraknit Merino 250 Thermal Pattern 1/4 Zip

100% Merino and 100% awesome, our Women's Intraknit™ Merino 250 Thermal Pattern 1/4 Zip takes comfortable warmth to the next level. Our Intraknit™ technology is helping us revolutionize the base layer industry—including 3D-mapping that results in a near-custom fit, durability, and freedom of movement. This thermal layer's engineered construction uses knit structures to enhance performance with a sophisticated finish, while insulating terry loops are seamlessly paired with mesh ventilation in gender-specific zones to balance warmth and breathability. To put it simply, this innovative top is one of our best base layers for cold weather adventuring—no matter what activities you're getting into.