Product details:

The True Pendulum Motion (TPM) will improve your putting arc and plane to create a perfect pendulum putting motion. It works with any putter and grip style and weighs less than one pound, with two telescope extensions for a one-size-fits-all golf training aid. Master your putting game pre-round, between rounds, or during the offseason in the comfort of your own home with an official training golf aid of Dustin Johnson.