Features:
Made of good quality material, durable to use.
Face cover accessories, which should be used with mouth cover(not included).
Suitable for sports face cover, running face cover, active carbon face cover, etc.
Replacement, Anti Haze, Face cover Accessories
Built-in 5 layers filter
Note: It is recommended to replace it once every 30 days, please replace the filter in time if it becomes black or damaged
Specification:
Material: ABS

Package List:
1/5/10/20/50x Breathing Valves Filter