ATPV Rating 40 cal/cm2 Color Gray Fits Chest Size 38 to 40 in Fits Waist Size 32 to 34 in Hazard Risk Category 4 Inseam 29" Material 88% Cotton, 12% Nylon, Nomex Thread Size Medium Special Features Flame-Resistant Type Personal Protection UNSPSC 46181508 Applications For All Electrical Workers Standards ASTM F1506, CE 0120 Certified, NFPA 70E