The ASTOR square toe boot features a slouchy mid-calf silhouette reinforced with strap accents and substantial buckle hardware. A wide sole with a block heel provides a solid foundation for this engineer-inspired design. Square toe block heel engineer boot Slip-on style Heel harness strap with hardware Top gore with 2 buckle straps for adjustable fit 2 inch heel height Size 6 measurements: 14.57 inch shaft circumference, 11.5 inch shaft height Size 8 measurements: 15.50 inch shaft circumference, 12 inch shaft height Size 10 measurements: 16.44 inch shaft circumference, 12.5 inch shaft height For correct calf measurements, measure your bare calf at its widest circumference with your foot flat on the ground Leather upper material Leather lining Leather sock Synthetic sole This product is made with premium leather and is individually hand finished. As a result, the product can vary slightly from the pictures. Fit tip: if you are in between sizes, size up a half size Imported Steve Madden ASTOR BROWN LEATHER 5 Steve Madden Astor Knee High Boots - Brown - Size 5 - Leather