High Quality Portable Electric Masking USB White Stay Fresh Wearable Anion Air Purifier

1.With a KN95 / N95 / FFP2 mask
2.Fresh and cool air pass 99.9% filter and pump into mask, enjoy fresh and cool air easily
3.Breathe out pass KN95 / N95 / FFP2, 95% filter, keep other people safe
4.Regular KN95 / N95 / FFP2, air in and out in same filter, easily get polution. 
5.If any gap, clean air flow goes out and stop virus to go into mask. Not tight, more safe and  comfortable for long time working.