Not only is Grip master a great product for musicians (I'm a musician), and athletes a-like.
it's also a great gizmo for the finger-restless.
I've found just within half an hour of using, the grip master has already enhanced
my ability to play electric guitar. With more complex and faster solo's!
It's like doing a full length "warm-up" or "practise" session, but without the Instrument.
Thus saving time, and effort to get a better result than warm-up sessions!
If you are an aspiring musician, it's a must-have.
If you are an aspiring athlete, it's a must-have.
If you just want something interesting and healthy to do with your restless fingers..
It's also a must have!
All in all ? an excellent all-rounder, that is well worth the expenditure. 5 out of 5!