CAIA084ASP The flexible sole made from natural cork and latex on this pull on boot is impact absorbing for a comfortable all day wear. The cork is harvested every nine years without harming the trees making this shoe eco and ego-friendly. The upper is made from wool that is warm in the winter and cool in the summer with double elastic gore so it is easy to get on and off. 4.75 inch shaft height and 10.5 inch shaft circumference. -City Line -Merino Wool Upper -Unlined -1.5 Inch Cork And Natural Rubber Sole -Pull On Boot -Made In Portugal