Smartwool

We've updated the fit of our Women's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and...

You’ll love the innovation of the Intraknit™ Merino wool in the Women's Intraknit Thermal Merino Base Layer 1/4 Zip, because it helps with moisture management, temperature control, and odor resistance....

We've updated the fit of our Men's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and...

Anything. Anywhere. That's what our Women's Classic Thermal Merino Base Layer Colorblock 1/4 Zip is made for. The possibilities are endless when you're wearing something this warm and ready to...