... away from the skin about 30% faster than synthetic fabric,and,unlike synthetics,is fire resistant and wool fibers ... Our high performance wool is water repellent,naturally elastic,and long-wearing for years of comfort.Materials:100% woolFabric construction ... :Jersey,Interlock,Rib,Terry,Brushed,Pointelle...Fabric weight:120gsm ~400gsmSewing machine:4 needle flatlock/3 needle ...