Earth Women's Odyssey 100% Synthetic Imported Rubber sole Shaft measures approximately 6.5" from arch Boot opening measures approximately 10.75" around Calf leather upper Pig skin sock lining 4mm EVA midsole with 6P fabric+3mm K503 foam+ arch cookie (N8-2)+2.0mm grey board+ steel shank+1.25mm Texon TR+ABS Heel with TPU top lift 2