From UGG® Men's, the Emmett Winter Duck Boots feature:

• Waterproof leather upper 
• Seam-sealed construction
• Gusseted tongue
• Ballistic canvas collar, ballistic canvas tongue, metal eyelets, rear pull tab
• Textile lining
• Textile sockliner & Foam footbed
• Treadlite by UGG® midsole
• White Spider Rubber outsole
• Customized dynamic support platform shank, weather rated -32° C
• Best for: casual, light or moderate rain, light snow