It is reusable. It works with 3M 2091 P100 Particulate Filter. After use, I spray the mask with 70% rubbing ethanol. Best result for corona virus are using 3M 2097 - Filter P100, Exceptional 99.97% filter efficiency meets NIOSH P100-series test criteria. Very satisfied.
This product is of good quality. The value for money is undeniable. Totally airtight if you close the two filter valves.
It fits perfect. It has a little strong smell of rubber but it looks good. In addition the seller was very kind and responded to my messages in a timely manner. Recommended
Spectacular! Very good mask!