Brinley Co Women's Harley Riding Boot Regular & Wide Calf 100% Synthetic Imported Synthetic sole Shaft measures approximately 17" from arch Platform measures approximately .50" Boot opening measures approximately 16.5" around Block heel height measures approximately 1 inch, taken from a size 6. Shaft height measures approximately 14 inches. Circumference approximately 14 inches. The Style name Harley WM and Harley are same.