Bleu Foret combines the finest in French tradition and innovation to provide an optimal comfort and unique pleasure. These Bleu Foret wool and silk ribbed over the knee sock feature quality of natural fibers, perfect fit and comfort. All Bleu foret have reinforced toes and heels. 58% Wool, 25% Silk, 16% Polyamide and 1% Spandex. Wash inside out and lie flat to dry.