easy to get a lot of concentrated pressure
I needed to massage my back almost every day, but with this thing my back is cured. I like this model better than the competitor designs/models.  I was expecting it to be crap, but it's easy to use and doesn't take much work to get a huge amount of concentrated/localized pressure.  It kills the knots behind my shoulderblades perfectly.  I travel with this thing because I like to use it especially after flights.
Rating: 5 stars