The Thermeator is designed to help keep your feet dry and warm during the longest days in the saddle. It starts with THERMOLITE, a special hollow core performance fiber that provides warmth without adding extra weight. Thermeator? is 30% lighter in weight compared to a similar knit sock constructed of Merino Wool. It also has a faster drying rate. The Thermeator quickly wicks moisture away from skin and is lightweight for less bulk inside your shoe. Thermeator is intended for athletes who love to ride outdoors no matter what forces Mother Nature serves up. It\'s flexible and thrives in cold, damp conditions.