From Vionic, the Uptown Leather Packable Travel Penny Loafers feature: Leather upper Travel-friendly collapsible upper that packs flat It is recommended to wear your new pair for a few hours to allow your feet to adapt to the new support.  Slip on Back pull tab Unlined upper Removable microfiber-wrapped EVA footbed 360 Ultra Flexible lightweight rubber outsole Approx. 1" platform height Approx. 1.12" heel height Imported.