Yinhongyuhe is a one-size-fits-all disposable medical mask that fits everyone, including children. It helps to limit the spread of infection. It is manufactured with advanced processing to provide the desired protection. Its manufacture has been calculated so that it can filter 95% of particles. It has a multilayer design and comes with an elastic ear loop that perfectly fits the mask to the face. Its nose bar is adaptable, soft and comfortable to wear. It adjusts the mask over the nasal septum to avoid contact with external agents from the environment. It is not reusable, it must be discarded after use. Before and after use should wash hands thoroughly with soap and water or hydroalcoholic solution. Suitable for all people. It has no contraindications.