9 oz. FR-treated 100% cotton7 exterior pockets hold lots of small tools and gearMic tabs provide easy access to remote microphoneBack access slot for pass-through of fall protection harnessConcealed snap fasteners for quick on and offMeets ANSI/ISEA 107-2015 Typoe R Class 2 compliantNFPA 70E compliant; ATPV 8.2 cal/cm2 (PPE Category 2)ASTM F1506 compliant