Smartwool Intraknit Thermal Merino Base Layer 1/4 Zip – Women's Size:S Built-in shorts deliver real coverage

Built-in shorts deliver real coverage so you can hike

GORE-TEX keeps your feet dry without sacrificing breathability

Roll-up leg tabs with button closures convert pants to capris fast when temperatures spike

Made with sustainable merino wool

This edition of the Boston wraps your feet in plush genuine shearling

Smartwool Intraknit Thermal Merino Base Layer 1/4 Zip – Women's Size:S Built-in shorts deliver real coverageFor cold weather runs, ski days, and winter hiking, the Intraknit Thermal Merino 1 4 Zip is our top pick for women who need a base layer that works as hard as they do. Smartwool's Intraknit construction places insulation and ventilation exactly where your body needs them, so you stay warm without overheating. The 1 4 zip lets you dump heat fast when the trail heats up. Intraknit technology creates distinct insulation and ventilation zones across the