Vionic Women's Orthotic Mesh Slip-on Sneakers, Agile Hydra Mesh Imported Padded, jersey lining; removable footbed; removable depth fitter for custom fit Flexible EVA midsole absorbs shock, helping reduce stress on feet, ankles, and knees APMA Seal of Acceptance Fit: true to size Helps to relieve common causes of heel pain and knee pain, related to over-pronation and flat feet