Review on Anti-Fog Replaceable 5 Layer Activated Carbon Filters by Ryan Hampton

Some people say you can use coffee filters or cloths in the mask but I prefer to use these filters. They seem good enough, I wish they were a bit bigger to cover most of the mask, but I can't find anything that compares. They seem to get the job done, although of course they are no substitute for social distancing, hand washing and sanitizing and should be used in conjunction with all safety protocols. This is my second order, I try to change it weekly.