You can walk miles in these shoes - so comfortable! Synthetic patent leather partially made from recycled materials or Nappa leather upper responsibly sourced through the Leather Working Group Partially recycled linings with soft + eco-conscious comfort Slip-on fit with back pull tab and stretch gore panels for extra flexibility Square toe 5.25 inch shaft height, 9.45 inch circumference Note: Measurements based on size 6 boot. For each half size up from a 6, shaft height increases by .12 inch, circumference by .20 inch. 2.25 inch block heel