Excellent Value
Since masks have become a necessity, I've been using these filters almost every day.  It's a standard design that has become very common lately.  They fit perfectly in cloth masks that have a pocket and I've been able to make them fit in a silicon respirator that I've been using.<br />The best thing about this brand is the great price.  I've paid double the price for exactly the same product.<br />10/10 would order again.
Rating: 5 stars