This lifevac is a total joke! No way the tongue and cheeks don't get in the way. So, really we are supposed to plunge down on someone's head and hope a toilet plunger works. Is that legit, seriously

I found this on their site https://vimeo.com/user31799477/review/143372612/72fa68229b

Also, it seem all you have to do for a beard is apply a little more pressure to form that seal