TAKE WRANGLER WITH YOU TO WORKOur top priority is keeping you safe on the job site, which is why we take flame resistance seriously. Our Wrangler® FR jeans are built to last through the rigors of dangerous and rugged working conditions, so you can dress for the job with complete confidence. Each pair of our flame-resistant (FR) jeans is made of pre-washed, heavyweight cotton denim for a comfortable feel and fit, but that's not all. With a full seat and thigh, these FR jeans feature the same fit as the Original Cowboy Cut 13MWZ that you know and love. They come fully equipped with our authentic five-pocket styling, 'W' stitching on the back pockets, and a bright orange ID patch on the outside for increased visibility. Not too loose. Not too tight. Plus, these hard-working jeans fit over boots.Certifications vary by wash Prewash: ATPV 24.0 CAL/CM2. Meets NFPA 70e/NFPA 2112 Certification. CAT2. Dark Wash: ATPV 21.0 CAL/CM2. Meets NFPA 70e/NFPA 2112 Certification. CAT2.