Material Girl Ludlow Women US 5 Black Knee High Boot Synthetic Synthetic sole Shaft measures approximately 15.25" from arch Boot opening measures approximately 17" around The style name is Ludlow. The style number is LUDLOW-BLK. Brand Color: Black (Main Color: Black) Material: Synthetic Measurements: Shaft measures 15.25", Circumference measures 17" and 1" heel Width: B(M)