Women's Base Layer

Setting the standard for all others to follow, the 200 Oasis Long Sleeve V Neck is icebreaker's best-selling base layer—a versatile active top for year-round layering and everyday comfort.

Setting the standard for all others to follow, the 200 Oasis Long Sleeve V Neck is icebreaker's best-selling base layer—a versatile active top for year-round layering and everyday comfort.

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

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

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

Setting the standard for all others to follow, the Merino 200 Oasis Leggings are comfortable base layer bottoms that make the perfect foundation for year-round layering.

Setting the standard for all others to follow, the Merino 200 Oasis Leggings are comfortable base layer bottoms that make the perfect foundation for year-round layering.

The benchmark against which all others are judged, the 200 Oasis Shorts feature our most versatile merino jersey fabric for year-round layering performance across any activity.

An elevated, sportier version of our best-selling base layer, the 200 Oasis+ Long Sleeve Crewe is a versatile top that make the perfect foundation for your everyday year-round layering system.

An elevated, sportier version of our best-selling base layer, the 200 Oasis+ Long Sleeve Crewe is a versatile top that make the perfect foundation for your everyday year-round layering system.

An elevated, sportier version of our best-selling base layer, the 200 Oasis+ Long Sleeve High Neck is a versatile top that make the perfect foundation for your everyday year-round layering system.

An elevated, sportier version of our best-selling base layer, the 200 Oasis+ Long Sleeve High Neck is a versatile top that make the perfect foundation for your everyday year-round layering system.

Crafted from 100% merino wool and modeled after our best-selling base layer, the 200 Oasis+ Suit is a foundational piece built for explorers, with full-body coverage designed to keep you warm during long days outdoors.

Midweight 100% merino fabric base layer bottoms designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Leggings are the ideal choice for cold-weather training and adventures when you’re moving fast thanks to our ZoneKnit™ technology.

A midweight baselayer designed for intense activity and made with 100% merino wool fabric, the 200 ZoneKnit™ Long Sleeve Crew features our ZoneKnit technology for ample breathability.

A midweight baselayer designed for intense activity and made with 100% merino wool fabric, the 200 ZoneKnit™ Long Sleeve Half Zip features our ZoneKnit technology for ample breathability.

A midweight baselayer designed for intense activity and made with 100% merino wool fabric, the 200 ZoneKnit™ Long Sleeve Half Zip features our ZoneKnit technology for ample breathability.

Midweight 100% merino fabric base layer bottoms designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Leggings are the ideal choice for cold-weather training and adventures when you’re moving fast thanks to our ZoneKnit™ technology.

We’ve recently updated this style from 260 Tech to 260 Oasis. While the name has changed, the product hasn’t. It’s built with the exact same design, composition, quality and performance that define this style. As we move through this transition, new and old packaging will be shipped randomly, and some...

We’ve recently updated this style from 260 Tech to 260 Oasis. While the name has changed, the product hasn’t. It’s built with the exact same design, composition, quality and performance that define this style. As we move through this transition, new and old packaging will be shipped randomly, and some...