Our SUPERA NWKVFR neck warmer is made with double-layer Kermel-viscose blend to protect against fire hazards. The fabric is soft and non-irritating, allowing for comfortable all-day wear. With its NFPA 70E compliance and arc flash-rated level 2 with an ATPV of 16 cal / cm, this neck warmer is suitable for workers in industries where fire hazards exist, such as construction, mining, and oil and gas.