Thorlo's Extreme Cold Over-the-Calf sock is ideal for keeping warm in sub-zero environments. Thorlo's EXCOU Extreme Cold Over-the-Calf Boot Sock features dense cushioning and mesh vents to keep your feet protected, warm, and dry. Showcasing heavyweight padding at the ankle, ball, heel, and toe, this sock protects and insulates even under the most extreme conditions. Ideal for outdoor use, on the job or in the field. This is a Unisex sock and identical to the HEOU and ST socks by Thorlo. Made in The U.S.A. Protection Level 3.
60% Worsted Wool, 26% THOR-LON Acrylic, 11% Nylon, 3% Spandex
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