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National Safety Apparel 8 Cal UltraSoft FR Overpants, Size: 4 XLarge, Ankle Style: Open, Certifications/Compliance: Arc Rating: 8 cal/cm², CAT 2, NFPA 70 E, NFPA, 2112, CSA Z462, ASTM F1506, OSHA 1910.269, Closure Type: Zipper, Navy, Cotton and Nylon