- 9 oz Wool FR Lenzing Blended Twill - Aramid sewing thread - FR Button front closure, button down collar - Chest patch & flap pockets - ATPV 9.0 cal/cm2, HRC 2 - ASTM F1506, NFPA 70E, EN ISO11612(EN531:1998) Molton Alu.Splash Level D2