Mining Fire retardant Safety Work Shirt is flame retardant and is necessary in most workplaces. Its fabric is permanently flame-retardant Modacrylic cotton wool, not only flame-retardant wear in the body is also very comfortable. The color is fluorescent yellow, which can serve as a reminder. In addition, its ARC ATVP value is 8.4 cal / CM2. Materialï¼?Modacrylic Interlock 6.4oz Colorï¼?HV Yellow Arc Rating: 8.4cal/cm2 Standards: UL classified NFPA 2112 - 2018 ANSI/ISEA 107-2015 Class 3, Type R NFPA 70E PPE ASTM F1506 Max 50 times wash Description 1.Inherently aramid sewing thread 2.Ribbed cuff and waistband to maintain shape 3.360�°C high visiable FR heat transfer segmented tape