counterfeits have infiltrated the market. you can find a list of niosh approved products on the website, but here s what to look for. remember the head straps, niosh approved will have straps instead of ear loops. it will say niosh with an identifying number starting with tc. . if you can tolerate an n-95, do it. if you want a kn-95 is fine. there is a gradation of capability of preventing you from getting infected and from you transmitting it to someone else. so we should be wearing the best possible mask we can get. the kn 95 is another fit tradition mask but finding one of these can be trickier. it is a chinese standard, meaning none of these are currently approved in the united