Instructions: 1. Put the medical mask into the cloth mask, as long as the ear hook is put out, gently adjust the position of the mask, pull it to the most open, you can use it normally! 2. You can take out the medical mask every day, put it clean, and then clean the cloth mask, you can use it many times. In fact, the general cloth mask can block the dust and foam in the air. In very rare times, you can add a medical mask to protect the environment and reduce garbage, while leaving the medical mask to more people in need!