1. The nose clip part is facing up, the side without nose clip is facing the face, and the ear straps are pulled on each hand; 2. Face the mask against the chin first, and pull the ear-band back to the ear and hang it on the ear until it feels comfortable; 3. Place the fingers of both hands in the middle of the nose clip and press inwardly according to the shape of the nose bridge to conform to the shape of the nose bridge; 4. Put your hands on your face when using, and check the tightness with your face.
