Carlos Santana Hanna 2 Wide Calf Women US 9 Black Knee High Boot Synthetic Synthetic sole Shaft measures approximately 15.5" from arch Boot opening measures approximately 15" around The style name / style number is Hanna 2 Wide Calf / D1953S2003/WC Color: Black Material: Synthetic Measurements: Shaft measures 15.5", Circumference measures 15" and 1" heel Width: B(M)