From the flame-resistant canvas to the FR elastic suspenders and FR buckles, you'll find nothing but the best protection with the Carhartt Flame-Resistant Midweight Bib Overall. A 6.5 oz. FR quilt lining constructed with modacrylic batting quilted to twill face cloth is perfect when those temperature begin to drop. The ankle-to-thigh leg zippers provide convenience, the chap-style double front and brass zipper fly with Nomex® FR zipper tape add durability and protection to this Carhartt FR Bib. Multiple tool and utility pockets are found throughout the flame-resistant bib for secure and convenient storage. Meets NFPA 70E standards.