ANSI Type R, Class 3 inherent flame resistant Modacrylic/Rayon/Twaron blend. Moisture wicking solid jersey knit with inherent flame resistant rib knit collar and thread. 2" IFR 8735 3M Scotchlite reflective tape. Complies with the requirements of ANSI/ISEA 107 for a FR garment. Meets ASTM F1506 (ATPv 10 cals/cm2) HRC2