Vionic with Orthaheel Technology Women's Olivia Ballet Flat,Cobalt,US 5 M Synthetic Podiatrist-designed, removable orthotic insole helps realign your foot to a natural position Deep heel cup and raised arch support help hold your foot in the correct position on the footbed Durable, textured rubber outsole helps keep you confident on your feet with sure-footed traction EVA midsole provides lightweight cushioning to soften your steps