Two women sitting on the floor wearing BRANWYN Merino wool athleisure in transformative teal blue green
Woman's wearing BRANWYN seamless Merino wool Bralette in Brown Nude

25% OFF SITEWIDE

Annual Holiday Sale

Our tester took this bra on an 11-day road trip and had to force herself not to wear it every day. The merino fabric holds it's shape and keeps cool.

UNDERWEAR THAT’S BUILT DIFFERENT

Woman sweating in BRANWYN seamless Merino wool bralette and hipster dark nudeMerino wool underwear

UNMATCHED PERFORMANCE

Merino wool is an all-weather wonder—working overtime to help you feel your best no matter the conditions.

This magical natural fiber moves moisture away from your skin, so you stay cool when things heat up and keep warm when there’s a chill.  

Two women doing yoga in BRANWYN second-skin comfortable seamless Merino wool bras and underwearTwo women doing yoga in BRANWYN second-skin comfortable seamless Merino wool bras and underwear

ALL-DAY COMFORT

BRANWYN Performance Innerwear is built to move with you—whether you’re sending your boulder problem, grounding in warrior pose, backpacking in Yosemite, or walking the dogs.

Our proprietary Merino wool seamless knit technology lets you say good riddance to bras that ride up and underwear that gives the dreaded wedgie.

With our targeted women-centric construction, you may forget you're wearing it—our customers often tell us they do!  

3 BRANWYN Performance Innerwear seamless Merino wool Bras and Bralettes in the outdoors3 BRANWYN Performance Innerwear seamless Merino wool Bras and Bralettes in the outdoors

EARTH FRIENDLY

Merino wool is a 100% natural, biodegradable, and renewable fiber.

Throughout their lifespan, sheep grow new fleece over and over, and their wool decomposes naturally in soil.

Our seamless design not only delivers that second skin comfort, it creates a more durable garment. Thanks to the strong bond between fabric layers, your innerwear maintains its shape and resists wear and tear more efficiently—reducing waste and providing more life out of each piece. Win-win.

LOVE BRANWYN OR PAY NOTHING

Not sure about wool?

Merino is super soft like cashmere!

It works equally well to keep you cool & dry in the summer as it does to keep you warm & dry in the winter.

We know you'll love it! But just in case you don't, we’ll give you a full refund. The First Try Guarantee applies to US orders only and does not apply to Bundle & Save or multiple products.

Two women running outside in BRANWYN natural white undyed seamless Merino bras and shorts

WE LEAD THE WORLD

When women tap into our power, we change the world.

That’s why BRANWYN donates 1% of all sales to organizations working to give women and girls every opportunity to stay active and dream big. 

PLAY FIERCE, STAY GOLDEN

Join our community of women @branwynofficial

Money Back Guarantee For 14 Days

Not sure about wool?

Merino is super soft like cashmere!

We know you'll love it! But just in case you don't, we’ll give you a full refund.*

*During sitewide or collection sales, discount and promo codes cannot be applied, and our site does not support code stacking.

Offers are valid while supplies last. Sale prices can’t be applied to past purchases, taxes, or shipping—thankfully, we can’t turn back time (yet).

Rewards, however, can be used during sales. If you need any help, our incredible Customer Happiness team is always here for you. 💛

Our First Try Guarantee is designed to help you find your perfect Merino match. It’s available only for U.S. orders. Bundle & save, and SWAG are not eligible for the guarantee. To keep things as sustainable as possible– try one, fall in love, then come back for the full drawer refresh.