Sanqi SQ100Gs NIOSH Surgical N95 filtering facepiece respirator Features 1.Listed on the CDC List of Approved NIOSH Surgical N95 Masks. 2.510K ASTM F2100 Cleared for use as surgical mask. 3.Helps protect against certain airborne biological particles with more than 95% efficiency. 3.Designed to be fluid resistant to splash and spatter of blood and other infectious materials 4.More comfortable to wear with Skin-friendly material. 5.Invisible nose bridge and elastic headband allow a good seal. 6.Easy to carry and store with individual package. 7.Excellent fit for most facial sizes with elastic headband.