When temperatures start to drop, I layer these merino woolcompressive leggings under my favorite trekking pants.Sweat-wicking, odor-resistant, and incredibly soft, theymove with me, mile after mile.
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SEAMLESS MERINO Wool
UNDERWEAR THAT’S BUILT DIFFERENT
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
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!
EARTH FRIENDLY
Merino wool is a 100% natural fiber, that is both biodegradable and renewable.
Throughout their lifespan, sheep grow new fleece over and over, and their wool decomposes naturally in soil.
Our seamless design not only delivers second-skin comfort but also 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.
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
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.*
Free exchanges for 30 days
We know how hard it is to find perfect underwear.
Need to swap for a different size, color, or style?
No problem.
Warranty for 1 year
Our bras and underwear are super high quality!
They will last 2-3 times longer than cotton or polyester bras and underwear.
We guarantee it.
*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.