pedag Keep Warm Wool Insoles, Handmade in Germany, Sweat Wicking Top Layer,pedag Keep Warm Wool Insoles, Handmade in Germany, Sweat Wicking Top Layer, Comfortable Keep your feet warm, comfortable and dry with pedag Keep Warm woolen insoles. Since you lose a lot of heat through your feet, these replacement inserts are designed as thermal foot warmers for cold weather activities, like shoveling snow, skiing, or high altitude hiking. High Quality Materials These insoles are designed specifically to keep your feet toasty warm.