Attributes . The most comfortable FR fabric in the market.; meets ASTM F1506.; HRC Level 2 per NFPA 70E.; 3M 8735 FR Reflective Striping.; Fabric arc rating of 10.0 cal/cm (per ASTM F2621); ANSI/ISEA 107, Class 2 or Class 3.; 61% Modacrylic, 32% Cotton, 7% Poly.; Custom Imprinting Available . Names