NASOMASK FFP2 - N95 GRADE 99.63% filtration of particulate matters (PM) 5 layer filtration based on nanotechnology FFP2 anti-pollution mask. It is made of ultra-soft fabric thatâ??s gentle on skin and provides comfortable-fit It has self-adjusting straps with an adjusting nose clip It has negligible breathing resistance. 99% Protection from PM 2.5 Allergens, Dust and Viruses Works for up to 80 Hours Comfortable Head-Loops FFP2 anti-pollution mask with European certification CE0194 EN149 It has self-adjusting straps with an adjusting nose clip It has negligible breathing resistance It is made of ultra-soft fabric thatâ??s gentle on skin and provides comfortable-fit