A great choice for arctic-like weather, Cabela's® Extreme Cold Mid Calf Wool Socks use advanced fibers to keep feet warm and odor-free. Combining merino wool and Carbon Heat™ fibers that capture and release warmth to insulate and regulate body temperature, these insulating socks keep body heat around the feet. Carbon coffee fibers absorb and naturally fight odors. Elastic arch support fights foot fatigue to assure all-day comfort. Ideal for hiking, hunting, snow skiing, camping, or winter sports in extreme cold conditions. Turn socks inside out before machine washing. 42% merino wool/39% acrylic/9% nylon/7% heat nylon/2% polyester/1% spandex. Made in USA.