Four-layer activated carbon filtration system technology<br />Antibacterial & antiviral with particle matter filter (PM 2.5-0.3) filter protection<br />Offers protection from pollution, fine dust, harmful gasses and allergen<br />Soft cushioned nose strip for comfort<br />Inner adjustable noseband for a contoured face fit<br />Adjustable/removable head strap<br />Can be approximately used for between 3 to 12 months<br />Reusable mask can be wiped down with a soapy warm cloth">