Lycra,Mesh,Nylon,Polyester,SpandexMade in USAThe Wrightsock? Coolmesh II Crew is a mesh of breathable fabric and soft cushioning for a complete wear all-day!Sold as a one-pair pack.Crew-cut style sits at calf.Patented double layer construction is both lightweight and minimal for optimal comfort.Dri-WRIGHT? II moisture-managing fibers help feet stay cooler and drier. Mesh panel at top of foot for enhanced breathability. Stabilizer Zone? in arch keeps the sock in place. Inner Layer: 70% Dri-WRIGHT? polyester, 26% nylon, 4% Lycra? Spandex; Outer Layer: 71% Dri-WRIGHT? polyester, 24% nylon, 5% Lycra? Spandex Machine wash warm, tumble dry low. Made in the USA.