From Skechers, the Women's Arch Fit Refine 2.0 - Copper Chic Slip Ons feature: Knit fabric upper made with copper yarns This design is granted with the Seal of Acceptance by the American Podiatric Medical Association (APMA) Podiatrist-designed shape developed with 20 years of data and 120,000 unweighted foot scans Stretch Fit® design for sock-like comfort fit Slip on design Patented Skechers Arch Fit® insole system with podiatrist-certified arch support Stretch Fit® design for a sock-like comfort fit Removable insole helps mold to your foot to reduce shock and increase weight dispersion Flexible traction rubber outsole Approx. 0.5" heel height Imported.