Classic rib-knitted sock made from high quality organic cotton. The sock is one-size and the fine rib pairs well with any look. The sock has a reinforced toe and heel and a hand-linked toe for seamless feel and comfort. EU: 41 - 46 UK: 7 - 11 US: 8 - 12 80% Organic Cotton 18% Polyamid 2% Elastane PETA Approved Vegan Environmentally Friendly Dyed Yarn - Oeko-Tex® Pre-washed Anti-pilling Made in Portugal