A N95 respirator is a respiratory protective device designed to achieve a perfect facial fit, with extremely efficient filtration of 95%+ airborne particles. Our N95 masks are NIOSH Certified, (the National Institute of Occupational Safety and Health) and the medical standard. They are very comfortable for long term wear. Product size is 10” L x 5.9” W x 2.1” H and is made of high-efficient electrostatic filter cotton and melt-blown non-woven fabric. They’re one of the best face masks for coronavirus.