The Mountain Horse Women's Active Winter Rider Boot will keep you warm on even the coldest days. The unique YKK Vislon side-fitted zipper is strong and durable and provides easy entry and exist. Heat-insulating faux fur lining will keep feet and legs warm while the waterproof construction keeps feet dry to the start of the zipper. The Extensia foot part has been tested to withstand one million flexes in 14F weather. Dirt repellent tread zones on the sole enhance grip in the stirrup. Built-in steel shank for increased stability. Warm faux fur lining YKK® Vislon side-fitted zipper is strong and durable to enhance the life of your boots Elastic design along the side of the zipper adds 50% more stretch The faux leather foot is waterproof and has been tested to withstand one million flexes in -10 degree weather! Heel is fitted with shock-absorbing IPS™ system to reduce shock impact Slim and contoured sole design is made especially for riding Mountain Horse Women's Active Winter Rider Boot - Black