Bamboo by Journee High Heel Microsuede Ankle Boot Synthetic Shaft measures approximately 5 from arch Boot opening measures approximately 12 around Pull-on styling for easy on and off, Textured sole, padded footbed Heel height: 2.5-inches, Shaft height: 5-inches Circumference: 12-inches, Manmade materials Measurement taken from size 6 Please note that measurements are approximate and may vary by size