Journee Collection Womens Bow Accent Ankle Boots Synthetic Shaft measures approximately 4 from arch Heel measures approximately 2.5 inches" Boot opening measures approximately 11.5 around Heel measures approximately 2.5 inches. Taken from a size 6. Shaft height measures approximately 4 inches. Circumference measures approximately 11.5 inches. Faux suede upper/man-made outsole