UGG Classic Birch Boot II — a rugged pull-on winter boot from UGG that combines a waterproof nubuck upper with a fully lined sheepskin interior for reliable warmth and traction in cold conditions. Key attributes: Brown | Nubuck | Waterproof upper | Thermal insulation | Rubber lug outsole for grip and stability | Slip-on (pull-on) design | Rear pull tab for easy on/off | EVA midsole for lightweight cushioning | Visible stitching | Structured, enveloping silhouette | Rear pull tab | Hot-stamped logo on heel | Contrast tank sole | Dimensions & fit: Enveloping fit | Pull-on design | Composition & care: Upper: waterproof nubuck | Full interior: 17 mm twin-face sheepskin | Lining and insole (UGGplush): 60% wool, 40% lyocell | Midsole: sugarcane EVA | Outsole: rubber | Shank: nylon