The Birch Collection took a 20-year nap. We woke it back up. The Birch Boot II is a rugged pull-on boot built from waterproof nubuck with a sheepskin interior, including a fully lined sheepskin shaft. The EVA midsole is lightweight and flexible, while the rubber lug sole delivers traction and stability wherever you roam. | UGG® Classic Birch Boot II in Black, Size 10, Wool