Duck boots with insulation for your warmth: Bearpaw® Estelle Insulated Boots. You love the style…the classic waterproof shell and leather uppers. You'll plow through slushy, wintry conditions and keep dry while looking sharp. But even better, 200 grams of thermal insulation also keeps you warm. That includes underfoot and all the way up to the ankle. And with a cushioned comfort insole and soft wool-blend lining, you'll step out in total comfort every time.