Silca Winter Socks Black/Mondrian Stripes S/MMade with the Italian knitting machinery. the Silca Winter Socks use merino wool yarn for the body. They boat extra thickness in the toe nit no extra thickness in the heel to alter the fit of your shoes.Key features: Merino Wool and Antibacterial QSkin yarns Extra Insulated Toe Box Minimal Heel Section to maintain shoe fit Made in Italy