The N-Ferno 6820 FR Knit Winter Hat provides warm FR protection for those working in cold environments where arc flash is a risk. Our highest rated flame-resistant product, this self-extinguishing winter hat keeps workers safe. A modacrylic and cotton-blend shell provides a comfortable and snug fit that keeps the cold air out. The 40% cotton and fleece lining adds softness and warmth for optimum comfort. Machine washable, this durable thermal hat is designed to withstand wear