Differential collar heights provide customized ankle support levels

The Birkenstock Birki Flow EVA, a true classic for any season, features ample air vents to keep your feet feeling fresh. Taking after the cork sandal, it's crafted from the ultra lightweight and extremely flexible EVA material. This premium, odor-free EVA is fashionable, lightweight, flexible, waterproof, and gentle on your skin.

13. Antimicrobial footbeds inhibit odor causing bacteria growth.