From Vionic, the Klara Herringbone Bow Detail Ballet Flats feature: Herringbone pattern flannel upper Modern square toe Slip on styling Synthetic lining Removable lightweight EVA insert VIO MOTION technology footbed Durable rubber outsole Approx. 0.375" heel height Imported. Styling Notes: It is recommended to wear your new pair for a few hours to allow your feet to adapt to the new support.