This thing can be a little hard to put in, depending on what kind of mask you use. It helps a little with fogging overtime but not much, its very loud to the person wearing it and it can get hard to hear, and gives me a headache. The fan really isn't strong enough to get rid of fog but it is strong enough to keep it out for a while.
I don't think its really worth it, it dose help a little but not enough to put up with the noise.
youre shooting a pball gun less than a foot away from your head and people are shooting back at you.....but the fan is too noisy for your tastes? oh well lets all whisper while this guy plays ohh.....wait im gunna breath out.... better go into the next room and plug up those ears......