The ASTOR FLANNEL BROWN MULTI 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 and textile upper material  Synthetic and textile lining  Synthetic sock  Synthetic sole Fit tip: if you are in between sizes, size up a half size Imported