Teko Women's Winter Sport Snowboard Medium Sock 66% Merino Wool / 18% Recycled Polyester / 13% Nylon / 3% Elastic Made in US 60% organic merino wool, 25% nylon, 13% recycled polyester, 2% lycra spandex Designed for skiing, snowboarding, and other winter sports. Organic, chlorine-free Merino wool is naturally wicking and insulating. Recommended for all weather conditions. Machine Washable Made in the USA