This garment meets or exceeds the standards for CAT2, Arc Rating ATPV 21 calories/cm², NFPA 2112 Compliant Certified by Underwriters Laboratories to meet the requirements of NFPA 2112 Standard on Flame Resistant Garments for Protection of Industrial Personnel Against Flash Fire, 2018 Edition. Pant label length may state a finished dimension (34U, 36U, 37U) depending on the style, as items are cut to order. COMFORT & SAFETY: This flame resistant pre-washed denim dungaree is made of 14.75 oz. 100% cotton denim. It's got a loose fit that sits slightly below the waist with a loose seat and thigh & wider leg opening for roomy comfort & ease of motion at work TRIED & TRUE FUNCTIONALITY: These dungarees feature a 1-piece waistband with concealed button closure, 5 jean style pockets, a hammer loop on left leg & a utility loop on the back under waistband. The triple-needle felled outseam guarantees durability EVERYDAY EXCELLENCE: Our workwear collection is designed for the work you do everyday. Stronger seams. More durable fabrics. Pockets in just the right places. With so many features that help you get the job done, our workwear definitely has what it takes.