Ideal for wearing beneath a helmet or on its own, this double layered warm and comfortable beanie will keep you protected from the elements and arc flash.Shell Fabric : Modaflame Knit: 60% Modacrylic, 40% Cotton 8oz, Lining Fabric : Modaflame Knit: 60% Modacrylic, 39% Cotton, 1% Carbon Fiber 8oz, ASTM F1959/F1959M-12 ATPV 9 CAL/CM2 (HAF 80.8%)