If there are any openings present when a body begins to bloat, it will start to Purge, a process that Erich Lubatti has shown us with this creation. Purge is part of Trick or Treat Studios? facemask collection. These masks are identical to the ones at Knott's Scary Farm's Halloween Haunt as Erich Lubatti makes the face masks worn by the street monsters. All of our facemasks come with a sewn strap to fit comfortably on your face.