Geox Women's Amithi10 Boot 100% Nappa Goat Leather/Synthetic Leather Rubber sole Shaft measures approximately 5.5" from arch Heel measures approximately 3" Boot opening measures approximately 10" around GEOX Sizing Chart PLEASE USE GEOX FOOTWEAR SIZING CHART LINK FOR MOST ACCURATE SIZE CONVERSION. Update your look with these feminine and stylish boots from Geox&reg;. Premium leather with textured panels. Bright hardware. Side zipper for easy entry. Soft textile linings. Leather footbed with the Geox breathes&reg; system footbed offers moisture-wicking control. Microholes in the flexible rubber outsole expel perspiration from the feet out of the shoes. Imported. Measurements: Heel Height: 3 in Weight: 10 oz Circumference: 10 in Shaft: 5 1&frasl;2 in Product measurements were taken using size 38.5 (US Women's 8.5), width M. Please note that measurements may vary by size