NSA C54VRLS Truecomfort FR Long Sleeve T-Shirt Orange Work comfortably all day in the TrueComfort FR Knit Shirt Collection by National Safety Apparel. This lightweight, 5.5 oz. FR Knit Shirt Collection offers multi-hazard protection against flash fire and arc flash exposures. Featuring a rib-knit collar and cuffs, and left front chest pocket this flame resistant knit shirt collection is the comfort you have been looking for without sacrificing the protection you need. Breathable fabric which increases moisture management FR Fabric will NOT melt, drip, or ignite Left front chest pocket Tagless neckline and exterior labeling Multi-Hazard Protection Rib knit neckline and cuffs Smooth covered neck and shoulder seam for exceptional comfort Compliant to CSA Z462 for Arc Flash (Canada) Compliant to NFPA 70E for Arc Flash Complies with OSHA 1910.269 Compliant to ASTM F1506 for Arc Flash UL Certified to NFPA 2112 Fabrics 5.5 oz. TrueComfort® Arc Rating: 8.9 cal/cm²