They keep your feet warm without being too bulky compared to most thermal socks .
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. The Thermeator™ is flexible and thrives in cold, damp climates.