UGG Australia® Rockville II Black Leather at Robert Frost Fine Footwear and www.frostshoes.com. The men's UGG Australia®Rockville II is a rugged motorcycle boot made with rich, full grain waterproof leather and finished with a molded rubber outsole. Detailed with metal buckles, this boot has an edgier look. Two interchangeable insoles, one leather and one sheepskin, offer you customizable comfort. Approximate boot shaft height is 7 inches. UGG Australia® Rockville II Black Leather at Robert Frost Fine Footwear and www.frostshoes.com.