Leather upper with genuine sheepskin lining and a man-made sole. Side button closure. Size 8 shaft has a 16" circumference at the top with a height of 12.5" From the instep to the top. This tall boot from ugg® australia is cozy, yet lightweight. Fastened at the side with three large wooden buttons, these boots are known for their casual, all-purpose durability. The ultra-soft genuine sheepskin lining famously keeps feet warm in winter and cool in warmer weather.