Model Number: RRS fire hoods Key Specifications/Special Features: Product descriptionCompliance with EN13911:2004 and CE certified.Materials: double-layer flexible textiles made of permanent fire-proof fibers, and sewn by permanent fireproof fibers.Incombustible, infusible, non-reflective for infrared rays, non-conductive for heat, anti-chemical.The highest limited oxygen index (LOI) amount all fire-proof hoods. It is very light and thermal protection performance (TPP) is very excellent.It is flexible and recoverable.Sewing thread: 100% of Kevlar