From Naturalizer, the Candela Leather Tall Dress Boots feature: Leather upper Inside zipper closure Synthetic lining Contour+ Comfort technology Synthetic non-slip outsole Approx. 15" boot shaft height Approx. 14.62" standard boot shaft circumference Approx. 2.12" blade heel height Imported. Styling Notes: Measurements based on size 6 boot. For each half size larger, shaft height increases by .12 inches, circumference by .20 inches