85% Egyptian Combed Cotton 12% Nylon 3% Spandex Expertly sewn Rosso Toe Link Yarn blend extending throughout the top cuff for extra durability and comfort Reinforced Heel & Toe Produced using eco-friendly certified Egyptian Combed Cotton* *The yarn used in our socks undergoes a comprehensive, third-party testing and certification system for textile products at all stages of production. Test criteria are updated annually and go far beyond existing legal regulations.