Ebony91 Olive BIRKENSTOCK PROFESSIONAL Part of The North Face

Part of The North Face Denali collection

As a tribute to iconic waves in Hawai‘i and the wāhine (women) who surf them

plus an EVA footbed for casual-cool comfort

The two-strap look is updated in our signature Birkibuc®

Ebony91 Olive BIRKENSTOCK PROFESSIONAL Part of The North FaceThe Quarks Ebony91 is a women's winter boot from the Fall 2025 collection, shaped for the colder months ahead. Its winter boot design means you can count on it through low temperatures, while the boot silhouette works with layered fall and winter outfits. Women's winter boot from the Quarks Fall 2025 collection Boot silhouette designed for cold weather seasons Sized and styled specifically for women