The NITRO BLACK STUDS is a sophisticated and versatile addition to any wardrobe. This pointed-toe heeled stiletto boot is designed for both style and comfort, ensuring a confident stride. With a knee-high height, it adds a touch of elegance to any outfit. 4 inch heel height Size 6 measurements: 13.39 inch shaft circumference, 15 inch shaft height Size 8 measurements: 13.78 inch shaft circumference, 15.82 inch shaft height Size 10 measurements: 14.17 inch shaft circumference, 16.69 inch shaft height For correct calf measurements, measure your bare calf at its widest circumference with your foot flat on the ground Mircosuede and studs upper material Textile lining Synthetic sock Synthetic sole Imported