The CYPRESS knee boot combines a stretchy upper and an extra-high block heel for the ultimate leg-lengthening, calf-defining fit. The tiered front platform keeps your steps balanced and secure with a wide base. Platform heel knee boot Pull-on style with stretch upper (fits most leg sizes) Block heel with tiered front platform 5 inch heel height 2.25 inch platform Size 6 measurements: 11 inch shaft circumference, 14.75 inch shaft height Size 8 measurements: 14.25 inch shaft circumference, 15 inch shaft height Size 10 measurements: 16.25 inch shaft circumference, 15.25 inch shaft height Vegan leather upper material Textile and vegan leather lining Vegan leather sock Synthetic sole Fit tip: if you are in between sizes, size down a half size