Falke Airport Socks use fine cotton on the inside and climate regulating merino wool on the outside. Perfect fit through fine elastane thread and longer cuff for a wrinkle free fit. The pressure free flat whipped toe seam and reinforced stress zones for perfect durability make Falke Airport socks the sock for the discerning man. 60% Virgin Merino Wool, 23% Cotton, 15% Polyamide, 2% Elastane.