I'm in love!
This is a great product! Before i bought it I was a bit sceptical, but I decided to try it out and send it back if I wouldn't like it. WOW! I will never send it back! As a trombone player I cannot always practice where or when I want to, but with my P.E.T.E. I can at least keep my chops fresh if I can't practise sometime.
I always keep it in my pocket, and since it doesn't make any sound and is quite discrete, I can use it almost whereever I want.
It's also so small that you can always bring it with you without any problems.