- -15° C
Long socks from the ORIGINAL range, the top of the Heat Holders line, rated 7 times warmer than a cotton sock. Comfort down to −50 °C / −58 °F. The leg rises over the calf and covers the band the boot leaves bare, where the cold gets in first. The thick knit traps a large volume of air around the foot and follows the calf without gripping it. Shoe sizes 37 to 42.

