I just ordered one, is it a good investment? I have never seen one up close before therefore never used one. Anyone have one in their gym?
This is the one I ordered.

this is why the public consider the BB community meat heads...maybe while you're there pick yourself up the amazing ab blaster?
gimmick with capital G. Probably helped those in the 70s that didnt have a clue how to stand or anything about mechanics. And this BS that you cant cheat while wearing it?....nothing stopping the upper torso from rocking still.
its a waste of money unless you find it impossible to stand straight and lift symmetrically and disciplined. if you cant, remember there are no such devices for the rest of your entire body...