Heavy duty FR treated 300 Denier trilobal rip-stop polyester with PU backing give superior abrasion, puncture, rip and snag resistance. 4" Vi-Brance® contrasting tape with 2" FR silver reflective tape. 10" boot access zippers with velcro cover. Heavy duty elastic suspenders. Detachable bib with elastic waist and zipper fly with snap waist.