The intense energy and very short duration of an electric arc flash represents a very unique exposure — one that requires flame resistant garments durable enough to withstand temperatures that approach 35,000 °F. Once ignited, regular cotton or poly/cotton work clothes can continue burning even after the source of the ignition is removed. But Westex brand fabrics will self-extinguish and provide guaranteed flame resistance for the life of the garment. See the videos and charts for proof of Westex fabrics’ superior FR properties.