Washable Merino Wool and Silk Toe SocksThese socks provide a comfortably snug fit with a moderate amount of stretch, making them highly comfortable to wear. The ankle opening is designed to avoid tightness, reducing the chances of leaving marks. They are crafted with silk on the inside, offering a soft touch against the skin, while wool is knitted on the outside for added warmth. 65%Merino Wool 25%Silk 9%Nylon 1%Polyurethane Machine wash warm, tumble dry low. Made by Craftsman in Japan