The Active Zip Paddock is ready to conquer cold winter days. Heat-insulating faux fur lining will keep feet and legs warm while the waterproof construction keeps feet dry up to the start of the zipper. The Extensia foot part has been tested to withstand one million flexes in 14°F weather. Dirt repellent tread zones on the sole enhance grip in the stirrup. Sturdy and durable YKK® zipper for easy entry and exit. Built in steel shank for increased stability. Material: Extensia. Insulation: Faux Fur.