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New to BRANWYN? Not sure about wool?

Merino wool is as soft as cashmere, and it keeps you cool and dry in summer and warm and dry in winter. We think you’ll love it. If you don’t, we’ll give you a full refund.

First Try Guarantee: first-time customers only, US orders. Limit one Essential bra or underwear product. Excludes Bundle & Save and final sale items.

1 Year Warranty Replacement

Our seamless Merino bras and underwear are designed to hustle as hard as you—lasting 2–3 times longer than cotton or polyester.

And if anything doesn't hold up under normal wear within one year of delivery? We’ve got your back (and your top drawer) with a free replacement.

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Seamless Merino Wool Underwear

Seamless Merino Wool Underwear

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25% Off

Side view of the Luna Gray BRANWYN Essential Hipster, high-waisted, moisture-wicking seamless Merino wool underwear.

Side view of the black Essential Hipster, high-waisted seamless Merino wool underwear with a breathable design.

Front view of the Light Nude Essential Hipster and matching bra, seamless underwear made to stay put all day.

Side view of the Light Nude Essential Hipster, moisture-wicking seamless underwear made from Merino wool.

Side view of the Dark Nude Essential Hipster, seamless, moisture-wicking underwear for active women.

Side view of the Transformative Teal Essential Hipster, seamless underwear made from Merino wool.

Front view of the Future Dusk purple Essential Hipster, high-waisted, moisture-wicking Merino wool underwear.

Woman in the Luna Gray Essential Hipster and matching bra, high-waisted seamless underwear made from Merino wool.

Essential Hipster

Sale price$30.00 USD Regular price$40.00 USD

Black

Luna Gray

Light Nude

Warm Nude

Dark Nude

Transformative Teal

Future Dusk

25% Off

Side view of the Warm Nude Essential Bikini, seamless underwear made from soft, breathable, odor-resistant Merino wool.

Close-up of the black Essential Bikini, soft and comfortable seamless underwear made from Merino wool.

Side view of the Luna Gray Essential Bikini, OB-GYN recommended underwear made from natural fiber Merino wool.

Athletic woman in the Light Nude Essential Bikini, sweat-wicking Merino wool underwear designed for activity.

Front view of Warm Nude bikini underwear by BRANWYN, natural fiber seamless underwear made from Merino wool.

Front view of the Dark Nude Essential Bikini, full-coverage seamless Merino wool underwear for everyday wear.

Front view of the Transformative Teal Essential Bikini, seamless Merino wool underwear made from breathable natural fiber.

Front view of the Future Dusk purple Essential Bikini, full-coverage seamless Merino wool underwear.

Front view of Warm Nude bikini underwear by BRANWYN, natural fiber seamless underwear made from Merino wool.

Essential Bikini

Sale price$28.50 USD Regular price$38.00 USD

Black

Luna Gray

Light Nude

Warm Nude

Dark Nude

Transformative Teal

Future Dusk

25% Off

Side view of the Light Nude BRANWYN Essential Thong, seamless underwear made from Merino wool for travel and everyday.

Woman in the black Essential Thong, seamless, breathable underwear made from Merino wool.

Side view of the Luna Gray Essential Thong and matching bralette, seamless Merino wool thong underwear.

Woman in the Warm Nude Essential Thong, BPA- and PFAS-free underwear made from natural fiber Merino wool.

Side view of the Dark Nude Essential Thong, a comfortable Merino wool thong for outdoor adventure and everyday.

Detail of the Future Dusk purple Essential Thong, soft, breathable seamless Merino wool underwear.

Back view of the Light Nude Essential Thong, seamless Merino wool thong underwear for women.

Essential Thong

Sale price$27.00 USD Regular price$36.00 USD

Black

Luna Gray

Light Nude

Warm Nude

Dark Nude

Future Dusk

25% Off

Side view of the black BRANWYN Essential Boyshort, seamless underwear made from Merino wool for women.

Side view of the Luna Gray Essential Boyshort, sweat-wicking, odor-resistant seamless Merino wool underwear.

Front view of the Light Nude Essential Boyshort, seamless underwear that stays put and moves with you.

Back view of the Warm Nude Essential Boyshort, breathable, moisture-wicking, odor-resistant Merino wool underwear.

Front view of the Dark Nude Essential Boyshort, Merino wool underwear for yoga, hiking, running, and swimming.

Front view of the Transformative Teal Essential Boyshort, seamless natural fiber underwear made from Merino wool.

Woman in the Future Dusk Essential Boyshort, seamless underwear made from Merino wool.

Back view of the black Essential Boyshort and bralette, quick-drying, OB-GYN recommended Merino wool underwear.

Essential Boyshort

Sale price$31.50 USD Regular price$42.00 USD

Black

Luna Gray

Light Nude

Warm Nude

Dark Nude

Transformative Teal

Future Dusk

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