These women's Birkenstock Arizona Essentials EVA Narrow roast (brown) slide sandals offer lightweight comfort and waterproof protection. The upper, lining and sole are made of high quality, light, one-piece EVA that provides great cushioning support and lasting use. These open toe sandals have dual buckle straps for a perfect fit. The anatomically shaped Birkenstock EVA footbed is designed with high edges and raised indentations to provide maximal grip and protect your toes during rolling motion, deep heel cup for optimal support, and molded heel for enhanced stability. Also, the footbed comes with longitudinal and transverse arch support to maintain natural alignment of the foot.