The Tour Stroke Putting Aid is the perfect way to help improve your putting from the comfort of your own home. The aid helps to frame your puts and get your stroke path right where it needs to be so that you are hitting each putt square to where you are aiming. It also helps with your ball position and gives you information on your head alignment over the ball. The openings come in 2 different sizes so you can practice and improve and move onto the smaller one when you feel confident. The aid is easy to assemble and fits easily into your golf bag.