Experience timeless comfort, quality, and style wearing BIRKENSTOCK's YAO. A contoured footbed constructed with cork-latex offers superb support and comfort as it conforms to the shape of a healthy foot. The adjustable straps allow for a custom, secure fit. The Yao will keep your feet comfortable and stylish. Details Two adjustable straps offer custom comfort fit. Built-in arch support and deep heel cups keep your fit aligned and supported. EVA outsole is flexible, durable, lightweight, and shock absorbing Birkenstock Yao Birko-flor Black - Narrow