Women's Base Layer Tops

Our versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is our best-selling base layer top. ...

The 175 Everyday Long Sleeve Half Zip is a classic, all-purpose base layer top made with soft and breathable 100% merino wool rib-knit fabric. 100...

Warm merino base layer bottoms with a unique jacquard pattern and a wide flattering waistband, the Merino 260 Vertex High Rise Leggings Peak AOP ar...

A warm merino base layer top with a unique jacquard pattern, the Merino 260 Vertex Long Sleeve Half Zip Peak AOP is a go-to piece for winter layeri...

Setting the standard for all others to follow, the Merino 200 Oasis Long Sleeve Crewe Rainer Ridge is a comfortable base layer top that make the pe...

Setting the standard for all others to follow, the Merino 200 Oasis High Rise Leggings are comfortable base layer bottoms with a wide, flattering w...

A midweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the Merino 200 ZoneKnit™ Long Sleeve H...

Incredibly warm merino-blend base layer bottoms for the coldest months of the year, the Merino 260 Tech High Rise Leggings are go-to piece for wint...

A heavyweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Half Z...

A heavyweight merino base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Crewe featu...

The benchmark against which all others are judged, the 200 Oasis Long Sleeve Half Zip features our most versatile merino wool jersey fabric for yea...

A midweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the Merino 200 ZoneKnit™ Long Sleeve H...

A midweight merino base layer top designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Long Sleeve Crewe feature...

Our versatile 100% merino wool base layer top with a classic zip-neck design, the 200 Oasis Long Sleeve Half Zip combines casual comfort with techn...

Our best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Leggings are the perfect foundation for yo...

An incredibly warm merino wool base layer for the coldest months of the year, the Merino 260 Tech Long Sleeve Half Zip is a go-to piece for winter ...

A warmer, midweight version of our best-selling Oasis, the 260 Tech Long Sleeve Crewe is a go-to piece for winter layering, made with 100% merino w...

Our most breathable, lightweight top for high-output activities, the 125 ZoneKnit™ Energy Wind Long Sleeve T-Shirt features a body-mapped combinati...