You need to know a lot of things when you opt for buying a mask. The first thing to note is to check if the mask is protected in a seal case or not. It should be in a cover or a plastic wrap so that no human contact can happen. The next thing for buyer of face mask is to check if their masks are of good quality Or not. You should check the layers your mask should have that can ensure that it will be able to keep your protected from getting in contact. Do you second to me?