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Title: The mask is great... Usually.
Review: I used to own one of these things (exact same model), but a long series of events led me to giving it away to my friend's girlfriend. Eventually, I missed it, and ordered this one.While the first mask was absolutely perfect in every way, the one I got from Amazon was damaged, and as such I don't trust it for NBC uses. There's something wrong that makes it so when inhaling it vibrates and shudders very violently and makes a loud noise. I also cannot get it to make an airtight seal.I guess some of the masks are great, and others damaged.
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