When you receive the package, please check whether the goods are complete, if there is a problem, contact customer service in time.
This mask are divided into include 1 mask + 2 filters or only 1 face mask, please purchase according to your actual needs.
1. Filters are not washable, It is recommended to use 1 filter for 3-7 days. If you are in an environment with severe air pollution, it is recommended that you replace it every 3 days.