FoxRiver Wilmot Lightweight Over-The-Calf Ski Socks 33% merino Wool/33% Acrylic/32% Nylon/2% Spandex Made in US These lightweight socks give you a cushioned fit in the heel and Shin, Plus the warmth of Merino wool Enjoy great fit and support from our urfit system Our WICK Dry Technology means your feet are Dry and comfortable Plus, Merino wool adds soft comfort and natural thermoregulation to these cold weather socks Made in the USA; our exclusive urfit system provides arch support and memory-knit construction