The Gruva is the only system that addresses rotation, weight transfer, club speed and a multi-plane-swing path. Its level of attention at every aspect of your swing is unparalleled. The Gruva will diagnose and correct your swing faults and reinforce your positive swing habits every time you swing in it. Its unique features makes it impossible for you to swing incorrectly in the system. Unlike any other system, you can hit a ball from right out of the Gruva and it all costs less than a new set of clubs or a few lessons with a Pro. Take your swing in your hands, you won't be disappointed.