The Barnstormer series is made to meet the performance and design demands of the Barnstormers Adventure Cycling Club. The Barnstormer Aireator series will exceed your sock needs for for all of life\'s adventures.- 60% Nylon, 39% Recycled Polyester, 1% Nylon- Machine wash cool. Tumble dry low.- No bleach, softeners, or harsh detergents.KEY FEATURESThin, breathable constructionNon-sagging cuffQuick drying Aireator mesh weave on top of footMinimal heel and toe seamsEco-friendly: Made from recycled water bottles in North Carolina.