CREATE Putt Pucks® ultimate putting system is a unique 3-in-1 putting aid comprising three components, the central puck, inner puck and outer puck.
Exc from Company's website
Uses
Our registered design has three distinct uses:
An instant rebound tool giving you immediate feedback as to whether your putt was hit straight, pulled or pushed, leaving you free to concentrate on your stroke.
A putting target system with three pucks of decreasing size to be used either independently or together in literally dozens of different formations and challenges.
A cup size reducer with three different difficulty levels so once you've mastered your stroke you can challenge yourself to hit more accurate putts to find the hole.