Wolky Women's Black Smooth Leather Ka Leather Genuine leather upper upholds Wolky's commitment to top-quality materials that hold strong (and comfy) mile after mile Leather-covered footbed with high-grade memory foam is anti-fungal, anti-microbial and moisture-controlling Lightweight polyurethane outsole comes up around the heel creating a fabulous foot hold you can't get from just any wedge Feather-light and mega-flexible materials offer impressive durability and easy all-day wear Adjustable straps at the toe and ankle help these heels fit and feel way more comfortable than most flats