Probably like a lot of golfers, I have bought training aids over the years, some more useful than others. This is the best one I have ever used. It is one of those training devices that serves as a constant reminder on how the club should be positioned on the downswing, and it also reinforces a couple of other very important elements of the golf swing, such as how your hands should be positioned at the top of the swing, and the importance of the weight transfer to the left side on the downswing. Like any training aid, it takes some time to get used to, but it is worth the time. I use it in every practice session, and my ball striking has noticeably improved.