All Arborwear Flame Resistant Apparel is NFPA 70E & ASTM F1506-10a Compliant and meets OSHA Final Rule 1910.269 Safety Standards. ... Layers of Pre-washed Fleece, 60% Modacrylic/38% Cotton/2% Anti-static Fiber. ... I have worn this sweatshirt almost daily for the past 2.5 years.