Smartwool Classic Thermal Merino Baselayer Womens 1/4 Zip Plus 2026

FEATURES 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 one of our...

FEATURES Meet the better-than-ever Women's Classic Thermal Merino Base Layer Crew Plus. We've updated this 100% Merino wool fan favorite with new colors and a new fit to improve functionality while...

FEATURES Whether you're working up a sweat or simply looking to stay warm and comfortable, our Women's Classic Thermal Merino Base Layer Bottom Plus is up for the challenge. 100% Merino wool fabric...

FEATURES 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 best base...

FEATURES 100% Merino. 100% capable. Our Women's Classic Thermal Merino Base Layer B is always ready for what's ahead and what's next. With a fit updated to improve functionality while enhancing...