FR MATRIALS:10oz 100% cotton durable duck canvas,water repellent stain resistant finish.US made FR adjustable buckles.Fabric Flame resistant treated,FR aramid threads,FR zipper front.Eyecatch FR tag,double front knee,buttom design for knee pad insertion. ENSURE SAFETY AT WORK :This work Bib overall meets or exceeds the standards for HRC2(Arc Rating Atpv 13 Calories/cm2)and the requirements of NFPA2112 standards on flame resistant garments for protection of industrial personal against flash fire,2012 edition.NFPA2112 NFPA70E ASTM F1506 classified by UL. UTILITY CONSTRUCTION:Our FR overalls feature durable triple-stitched seams for added strength, a watch pocket,double back pockets,ledge pockets hammer loop,interphone loop, a convenient dual pocket for cell phone, pliers, ruler, etc,and a large bib pocket division.Adjustable shoulder straps featuring US made FR buckles RELAXED FIT:FIT:Relax fit with and elastic waistband offer more comfortable room when you bend or climb.elastic waist help workers have many conveniences and comfort when working.Machine wash,prewashed,preshrunk and wrinkle-free. MULTI-USE:UP to 100 washes-Made for Welders, Fitters, Ironworkers, Electricians, and other Industrial Workers in Oil and Gas field. It Can be Used for any Kind of Industrial and Construction works. FR Bib Overalls crafted from 10oz 100% cotton duck canvas with water-repellent & stain-resistant finish. UL-classified, meets HRC2, NFPA2112 & ASTM F1506. Built with FR aramid thread, FR zipper, US-made adjustable FR buckles, double front knees for knee pads. Relaxed fit with elastic waist, triple-stitched seams & multi utility pockets. Pre-shrunk, wrinkle-free & machine washable.