The BERKLEIGH BLACK WIDE CALF square toe knee boot gives you a sleek and defined silhouette with a stretch fabric construction and platform sole with a block heel. Square toe platform block heel knee boot Side zipper closure Extended shaft circumference for wider fit 3.25 inch heel height 1 inch platform Size 6 measurements: 13.46 inch top-shaft circumference, 13.1 inch mid-shaft circumference, 15 inch shaft height Size 8 measurements: 14.33 inch top-shaft circumference, 13.5 inch mid-shaft circumference, 16 inch shaft height Size 10 measurements: 15.20 inch top-shaft circumference, 13.9 inch mid-shaft circumference, 16.5 inch shaft height For correct calf measurements, measure your bare calf at its widest circumference with your foot flat on the ground Features stretch material for a flexible fit - may allow for additional calf circumference beyond listed measurements Vegan leather upper material Textile lining Vegan leather sock Synthetic sole Imported Steve Madden BERKLEIGH BLACK WIDE CALF 9.0W Steve Madden Berkleigh Wide Calf Block Heel Boots - Black - Size 9.0W - Leather