From Naturalizer, the Optimus Leather D-Ring Hardware Ankle Booties feature: Leather upper with recycled lining Sleeked bootie with decorative stitch details and bold buckles Side zipper closure Fabric lining Contour+ Comfort technology for a premium fit and all-day comfort experience Linings, insole, toe box, and heel counter crafted from partially recycled materials Synthetic outsole Approx. 6.38" boot shaft height Approx. 12" boot shaft circumference Approx. 1.38" block heel height Imported. Styling Notes: Measurements based on size 6 foot. For each half size larger, shaft increases by 0.12 inches, circumference by 0.20 inches. Consciously packaged: our shoe boxes are made of recycled paper + soy based ink