Conforms to EN ISO 11612 A1 + A2, B1, C1, E1 and F1.EN ISO 11611 class 1, A1 + A2.NFPA® 70E.ASTM F1959/F1959M-12 APTV=11.2 CAL/CM2.Flame resistant finish.UPF 50+.Part elasticated waistband with belt loops.Zip fly with hook and bar over.Two side pockets.Ruler pocket.Twin needle seams.Co-ordinates with PW453.