Use these filters with an underlining mask. It is suitable for sandstorms, haze, dust, and other environments in four seasons. It can effectively block the mouth and nose from inhaling pollutants. It can also be used for health protection in the general environment.
• Not a Medical Device
• Normal Circumstances: Replace After One Week
• Special Periods: Replace Every Day
• Product Size: 12.5cm x 8cm
**This item is final sale and cannot be returned due to health and safety guidelines.