A half-zipper closure gives the HOLLY knee boot a calf-defining fit while an angled block heel and a square toe giving this style a sharp finish. Square toe block heel knee boot Side half zipper closure Angled block heel 2.75 inch heel height  Size 6 measurements: 12 inch shaft circumference, 14.25 inch shaft height  Size 8 measurements: 14.5 inch shaft circumference, 15.5 inch shaft circumference Size 10 measurements: 15 inch shaft circumference, 16 inch shaft height Vegan leather upper material  Textile lining Vegan leather sock  Synthetic sole  Imported