Carlos by Carlos Santana Women's Hanna Wide Calf Tall Shaft Boot Synthetic Synthetic sole Heel measures approximately 1 inches" Man-made upper; Man-made sole Round closed-toe wide-calf tall shaft boots with full-length side zipper Decorative adjustable buckle detail Shaft: 15-1/4in height, 16in-3/16in - 18-15/16in circumference. Shaft height & circumference will vary by size. 1in heel