* The original DeFeet sock, the Aireator has been consistently upgraded and remains the gold standard of cycling socks.* Affordable and incredibly durable, Aireator’s are the most popular cycling sock the world has ever known.* DeFeet Aireator mesh for superior breathability and comfort, the first sock to incorporate this type of open-mesh construction.* Eco-friendly: Made from recycled water bottles in North Carolina, USA.* Great for running, hiking, and on the bike * Machine wash cold, tumble dry low. No bleach, softeners, or harsh detergents.* 60% Nylon, 39% Recycled Polyester, 1% Lycra