FFP2 KN95 face masks. Four layers of advanced protection - Filtering particulate protection respirator, the product complies with GB2626-2006 standard. The mask's 3D shape is designed according to the ergonomics of the human face to ensure the tightness and increase the breathing capacity of the mask, greatly improve the air permeability and make it more comfortable to wear and breathe. Filters and protects against 95% of airborne particles and bacteria. Open the mask fully, position the mask with metal nose strip up. After placing, use both hands to press the metal nose strip to fit the bridge of your nose and achieve a better protection effect.