The Black Stallion TF2520-GL Long Sleeve T-Shirt is designed for workers who may be exposed to potential flash fire and arc flash hazards typically associated with Oil & Gas, Utility, Construction and Industrial applications. Layer under protective outerwear to increase protection. Tested for both NFPA 2112 and NFPA 70E compliance. Maintains protection through 100 home washings (50 commercial laundry cycles).