A half zipper at the inner ankle gives the ARCHERS knee boot a calf-defining silhouette. A narrow block heel and smooth upper finish the sleek effect. Block heel knee boot Half zipper closure at side 4 inch heel height Size 6 measurements: 15.4 inch top-shaft circumference, 13.4 inch mid-shaft circumference, 13.75 inch shaft height Size 8 measurements: 16.5 inch top-shaft circumference, 14.3 inch mid-shaft circumference, 15 inch shaft height Size 10 measurements: 17.6 inch top-shaft circumference, 15.3 inch mid-shaft circumference, 15.5 inch shaft height Leather upper material Textile and synthetic lining Synthetic sock Synthetic sole Imported