Find the best merino wool underwear.

Our bras and underwear are an essential component
of a perfect layering system.

Why merino wool in underwear?

Merino wool feels soft next to skin, manages moisture, and helps resist odours, making it an ideal choice for everything from daily wear to active pursuits.

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For women

Explore a variety of styles that are made help you move comfortably though any activity.

Siren

Simple, soft, and stretchy, the Siren collection features our Corespun merino blend fabric for durable performance and breathability.

Shop Siren

Sprite

Designed for all-day comfort, the Sprite collection is made with our Cool-Lite™ merino-blend jersey fabric that dries quickly and helps keep you cool.

Shop Sprite

Lotus

Midweight but never sheer, the Lotus collection features a textured, merino-blend rib fabric that’s soft and stretchy.

Shop Lotus

Queens

A medium-support 100% merino wool bra featuring contoured design lines for comfort, mobility and support. 

Shop Queens

For men

Explore our underwear collection, designed for comfort and natural performance.

Anatomica

Stretchy and slim-fit merino-blend boxers ideal for daily life and weekend adventures.

Shop Anatomica

ZoneKnit™

Our most supportive boxer with zoned engineered performance to help regulate your body temperature during high-intensity activities.

Shop ZoneKnit™

Underwear FAQs

Does merino underwear itch like regular wool?

No. Merino wool used in icebreaker® underwear is ultra-fine and soft, which helps it feel smooth against the skin. It’s naturally flexible, so it bends with your body and won’t cause the severe scratchiness often that can be associated with traditional wool. Even those with sensitive skin find it comfortable enough for daily wear.

Is merino underwear good for hot weather?

Yes. Merino wool is thermoregulating, meaning it helps keep your body cool in warm conditions. It’s breathable and wicks helps manage moisture away from the skin, so you stay dry and comfortable even in humid climates or during intense activity.

Can I wear merino underwear for workouts?

Definitely. Styles made with merino blends like Corespun and Cool-Lite™ fabrics are designed to handle movement and sweat. They stretch to move with your body, dry quickly, and help resist odour which makes them a solid choice for running, training, or long gym sessions.

Will merino underwear stretch out over time?

No. Fabrics like Corespun wrap merino around a nylon core for added strength, helping the underwear maintain its shape after repeated wear and washing. You get the comfort of wool with the durability of performance fibres.