From Vionic, the Alameda Woven Leather Mary Jane Flats feature: Woven leather upper Slip on styling with adjustable hook-and-loop strap Modern square toe Removable lightweight EVA insert VIO MOTION technology footbed with contoured arch support and a deep heel cup to provide stability Durable synthetic 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.