Designed for workers who may be exposed to potential flash fire and arch flash hazards typically associated with oil and 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). 7 oz flame-resistant cotton jersey knot. UL classified. ATPV 12 cal/cm2 (PPE Cat 2). Stitched with FR aramid threads throughout. Convenient scribe pocket on left sleeve.