From Vionic, the Aria Leather Lugged Wedge Booties feature: Premium leather water repellent upper Inside zipper closure Outside finger gore Back pull tab Synthetic lining Lightweight, flexible EVA midsole Durable synthetic lugged outsole Approx. 5.39" boot boot shaft height Approx. 10.87" boot shaft circumference Approx. 0.75" platform height Approx. 2.50" wedge 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.