Wash inside out, do not iron, do not bleach. Mercerized cotton, known for its strength, smoothness and beautiful lustre, ensures socks best performance. Vent zones improve airflow and breathability, keeping the feet cool. Softly elasticated bands stop the short socks from slipping down into the shoes. Y-heel design provides a better fit and makes socks more comfortable to wear. Flat hand-linked toe seam prevents skin irritation in the sensitive area around toes. Reinforced stress zones increase socks durability. Made in Northern Europe.