Certificate: ISO, CE, WHO, FDA & NABL approved lab test with BFE >99% 
Effectively filters 99%+ bacteria, Dust and Air borne particles of more than 0.3 micros 
Made of total 5  layers of which 3 layers are melt-blown filters for higher filtration and re-usability 
Nose clip offers a snug fit and avoids fogging of eye-glasses 
Skin Friendly inside fabric for comfort