From Vionic, the Chardonnay Velvet Dress Sandals feature: Premium velvet upper Received APMA Seal of Acceptance Decorative covered buckle detail Adjustable hook-and-loop gored strap closure to ensure perfect comfort and fit Synthetic lining Built-in VIO MOTION Technology footbed with arch support and cushioning Deep heel cup provides stability Durable synthetic outsole Approx. 2.5" heel height  Imported. Styling Notes: It is recommended to wear your new pair for a few hours to let your feet adapt to the new support.