Karen Scott Viivi Women US 10 Gray Mid Calf Boot Synthetic Synthetic sole Shaft measures approximately 9" from arch Boot opening measures approximately 13" around The style name is Viivi. The style number is VIIVI-GRY. Brand Color: Grey (Main Color: Gray) Material: Synthetic Measurements: Shaft measures 9", Circumference measures 13" and 3.5" heel Width: B(M)