Powerboots Original®. Winter boots with a warm lining made of quick-drying polyester fur and with a snow cuff. The boots are made of three layers of polyurethane to insulate your feet and keep them warm in temperatures as low as -30°C. The boots have no seams and are 100% waterproof. They have a flexible, wide fit and weigh 40% less than a conventional boot made of rubber or PVC. Because of their flexible fit, the boots are light in weight and comfortable to walk in. The anti-slip, shock-absorbent outer sole gives the boots stability.