The Wrightsock CoolMesh II just got better! New fit and feel, and features the Double LayerA(R) Anti-Blister System - moisture management, friction reduction, and temperature regulation.Features Dri-WRIGHTA(R) II.Stabilizer Zone to help lock the sock in place.Mesh panel for breathability.Inner layer fiber content: 70% Dri-WRIGHT II polyester/27% nylon/3% LycraA(R) spandex.Outer layer fiber content: 71% Dri-WRIGHT II polyester/22% nylon/7% LycraA(R) spandex.805