We have fortunate to partner up with Applied Golf Technologies from St.Andrews after meeting at the PGA Orlando golf expo. We have such a new and unique product they wanted to try it out and wrote this on their webpage (red arrow markers designed to help you hole more putts). Golf instructors find that this is a great aid for putting and actually works. It is simple and easy to use, makes sense and all around great product. There is nothing else out there similar so get yours today!