KN95 masks sold in packs of 5. Can be used for up to 15 days. These are not washable masks, but also not the instant disposable masks either.
Here we have the KN95 mask worn for PPE protection.
Not sure what KN95 masks are have a quick search and you'll see that it's the best on the market for PPE protection.
Come in packs of 5 masks and very select few available.