Saucony Men's 3 Pack Pro Series Contour Quarter Socks 65% Rundry Pro Polyester/33% Nylon/2% Spandex Machine Wash 65-percent rundry pro poly, 33-percent nylon, 2-percent spandex Rundry pro ultra soft moisture wicking yarn Engineered arch stability with unique arch support system provides a secure and stable fit Airmesh venting for breathable mesh maximum airflow Cushioned sole for superior comfort