Wigwam Women's Snow Whisper Pro Ultra-Lightweight Ultimax Ski Sock 38% Acrylic, 25% Nylon, 20% Olefin, 17% Spandex Made in US Machine Wash Ultimax moisture control system keeps feet dry Promotes dry feet for odor and blister protection Precise foot hugging fit for maximum performance and comfort. 2 year performance guarantee Performance ski and snowboard sock