100% Cotton FR MATERIALS: 5.5OZ Cotton Twill, FR treated, with FR buttons & threads. Clear FR tag on arms. Neck tag with UL Certification details. FASHION AND COMFORT: This fire-resistant (FR) work shirt offers an excellent and comfortable fit, as well as being soft and stylish. Prewashed & preshrunk to retain size. Wrinkle-free for easy car STANDARDS COMPLIED: Meets HRC2 standards. Compliant with NFPA2112 (2012) for flash fire protection, NFPA70E, ASTM F1506, & CAT II classifications. Ensures safety at work Multi-Use FR Shirt: Ideal for welders, fitters, ironworkers, electricians, & more. Durable pockets & features for industrial & construction tasks. Protects & aids in heavy-duty jobs, at work or home Perfect Service Time FR Shirt: Effective up to 100 washes. Provides long-lasting flame-resistant protection for industrial use