Great Tool - overpriced
Good little tool for clearing mucus that comes with COPD.  BUT it's extremely over-priced:  $10 worth of plastic for the every day low price of $150 (Sept 15, 2017)  This tool fit's right in your pocket, being a tube about 6-7 inches long, 3/4 inches thick and curved.  What I like about this tool is the vibrations that can be dialed in can be random...not just a steady thumping.  Hmmm....2-5 light quick vibration, then a sharp 'thumper' vibration.  It really helps to clear the passageway and kick that goop loose from my lungs.  Just experiment when you get it...everything becomes self-explanatory.
Rating: 3 stars