Women's Franco Sarto Katherine Knee High Boots Make a bold statement in these sleek, essential knee high boots for women. Stretch suede, faux leather partially made from recycled materials or Nappa leather upper responsibly sourced through Leather Working Group-audited factories. Partially recycled linings with soft + eco-conscious comfort. Back-zip closure. Metallic heel detailing. Pointed toe. 15.25 inch shaft height, 12.75 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. 3.5 inch block heel.