Pearl iZUMi Attack Tall Socks 100% Other Fibers Made in US Spring/summer 2017 Select transfer yarns provide the benchmark in moisture transfer. Mesh ventilation over top of foot. Tall cuff height Flat toe seam construction provides superior comfort over Toes BioViz screaming pink and screaming Yellow color options for added daylight visibility Fabric: 55% Nylon/43% Nylon/2% Spandex