"Treat your feet! Because they deserve to be loved too. The organic cotton socks are seamless and breathable, keeping your feet happy, even after a long days work or a long days sitting and doing nothing. We wont judge. 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"