For my initial order with American Screening, the KN95 masks that were shipped were of good quality, large enough to cover the entire face, no perforations or holes. When I reordered, American Screening, as per their policy, was free to substitute a mask of "comparable type." They in fact shipped substitutes with perforations that will allow contaminants including bacteria and viruses to enter easily (see photo below). I am demanding my money back, but doubt I will have any luck. Their customer service is terrible. Do not buy from this company.