75% cotton/ 23% polyamide/2% elastane. These socks are made from organic cotton. The GOTS (Global Organic Textile Standard) certificate is issued by Ecocert Greenlife. Combed cotton. 14 knit gauge. French Origin Guaranteed. Mid-length. Reinforced heel and toe. “Made in France” jacquard insert and size information at bottom of sock. Double thickness at upper rib for maximum comfort