Certified and tested to protect against arc flash hazards: NFPA 70E, ASTM F1506; ATPV 4.6 cal/cm2, CAT 1. Meets ANSI/ISEA 107 standard for hi-vis apparel. GlenGuard FR Fabric, 5.6 oz modacrylic mesh body and binding (87% modacrylic and 13% Kevlar material). Flame-resistant hook and loop closure with D-ring access on back of vest. Features 2 ANSI-compliant 3M Scotchlite FR reflective tape. One convenient interior pocket and dual pen pocket. Single radio mic tab made from flame-resistant modacrylic material.