From Vionic, the Bella Patent Bow Detail Thong Slip-On Sandals feature: Patent synthetic upper it is recommended to wear your new pair for a few hours to allow your feet to adapt to the new support.  Dainty bow detail with metal aglets Slip-on design with woven toe post Fabric lining Synthetic outsole Approx. 0.625" platform height Approx. 1.5" heel height Imported.