Has anyone used the VeloPro? Thoughts and opinions

I throw relatively hard already, but would the VeloPro help me engage my lower half more and clean up a collapsing back knee? Does anyone have experience with it? I’m looking for smoother mechanics to take stress off of my arm, my velocity is already where I want it to be ( more velocity is always better, but content with where I’m at ).
Also, I’m 6’5’’ 195 lbs if this means anything.