A BIRKENSTOCK staple, the Birki Flow can be worn year-round. Large openings at the front of the foot ensure a consistently cool climate inside the shoes. Inspired by its cork counterpart, this model is made of EVA, a particularly lightweight and flexible plastic material. This premium EVA, odorless and free of toxic substances, boasts numerous advantages: its stylish, lightweight, highly elastic, comfortable against the skin, and water-resistant. BIRKENSTOCK anatomical footbed in EVA Upper: EVA Insole: EVA Outsole: EVA Details: Water-resistant, washable, and ultra-lightweight material Made in Germany