?Model No. KF94WL -. Korea's Ministry of Food and Drug Safety Approved : KF94 (MFDS No. 101-1) ?Description -. A hard shell in the center layer creates a stable shape. -. By keeping a fixed shape while breathing, the mask lining is appropriately spaced from the user to maintain cleanliness. -. Gently and Securely conforms to the curves of the face to provide a comfortable fit. -. Utilizes KF94 filter technology to block fine dust particles. -. This mask (KF94WL) can filter more than 94% of particles with an average size of 0.4 ? -.The application of distinctive quadruple blocking system sately protects everyone against fine dust and respiratory diseases present in the air ?How to use -. Remove mask from packaging and hold by the straps with the nose piece facing upward. -. Place the mask on your face so that the nosepiece rests on your nose and the bottom half covers your chin. -. Pull the straps over your ears and adjust position so that your mouth, nose and chin are completely covered by the mask. -. Using both hands, place your fingertips on either side of the nosepiece and mold the clip to the shape of your nose by pushing inward and moving your fingertips down both sides. *Pinching the nosepiece with one hand may result in improper fit and reduce mask effectiveness. -. Be sure to use two hands. -. Perform a seal check prior to each use. Check for air leakage and adjust the mask as necessary so that it adheres closely to the face ?Warnings -. Do not use with other materials such as tissues or towels under or over the mask -. Do not use if the inner fabric has been contaminated. -. Do not wash and reuse. -. Do not touch the mask surface after wearing. -. Pregnant women, people with respiratory or cardiovascular diseases, children and the elderly should consult a doctor or other expert before use. -. If you are having difficulty breathing due to mask use, stop wearing and consult a doctor immediately.