Keep the adventure going even when temps dip in the women's Smartwool Classic Thermal Merino Colorblock Quarter-Zip base layer top. It's crafted for warmth and comfort.

• ZQ-certified merino wool with an interlock-knit construction enhances comfort, breathability, thermoregulation and odor resistance
• Flatlock seam construction minimizes chafing
• Slim fit with side-to-front wrapping seams is intended to follow the contours of the body