89% cotton / 9% polyamide / 2% elastane. “Origine France garantie“. Mercerised Egyptian cotton. Reinforced knit. 18 Gauge. Reinforced contrast heel and toe. "Fabriqué en France" jacquard insert and size information at sole. Double thickness at upper rib for maximum comfort. Certified STANDARD 100 by OEKO-TEX® N° CQ 1007/8, IFTH.