Pearl Izumi - Ride Men's Elite Socks 69% Polyester, 27% Nylon, 4% Spandex Made in US 69% Polyester, 27% Nylon, 4% Spandex Made in the USA ELITE Transfer yarns provide superior moisture transfer Flat toe seam construction provides superior comfort over toes Anatomic arch compression for a performance fit Spring/summer 2016 Elite transfer yarns provide superior moisture transfer; Flat toe seam construction provides superior comfort over toes Anatomic arch compression for a performance fit; Mesh ventilation over top of foot; Standard cuff height