Our socks are manufactured right here in Western North Carolina by Defeet International. Affordable and incredibly durable, Aireator's are the most popular cycling sock the world has ever known. The name Aireator comes from the Aireator mesh weave foot top. As the first sock to incorporate this type of open-mesh construction, Aireator's breathe and wick well. They are thin throughout for a light weight feel and help maintain an efficient, close fit in performance cycling shoes. They are made with CoolMax® EcoMade™ fibers that are derived from recycled resources.