1.Hold the mask with your hands to fix it on your face and chin. 2.Adjust the line of the nose bridge to fix it on your nose bridge, hand the ear-bands on both sides of your ears. 3.Adjust the upper and lower parts of the mask to fit your face. 4.Press the adjustment bar to fit bridge of the nose Applicable people: Not only suitable for child, adult, women, men, but also a good choice as back to business gift, back to school present. Good to serve as school supplies, home supplies and office supplier