The ASTOR-W 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. Leather upper material Leather lining Leather sock Square toe block heel engineer boot Slip-on style Heel harness strap with hardware Top gore with 2 buckle straps for adjustable fit Size 6 measurements: 15.55 inch shaft circumference, 11.5 inch shaft height Size 8 measurements: 16.49 inch shaft circumference, 12 inch shaft height Size 10 measurements: 17.43 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 Synthetic sole 2 inch heel height Imported