The ROCKYY-W knee boot features the wide profile of an engineer boot with harness and buckle hardware adding an industrial edge and giving the design an adjustable fit. Leather upper material Block heel engineer boot Slip-on style Top gore with 4 adjustable buckle straps Textile lining Synthetic sock Synthetic sole Size 6 measurements: 15.55 inch shaft circumference, 12.5 inch shaft height Size 8 measurements: 16.49 inch shaft circumference, 13 inch shaft height Size 10 measurements: 17.43 inch shaft circumference, 13.5 inch shaft height For correct calf measurements, measure your bare calf at its widest circumference with your foot flat on the ground 2 inch heel height Imported