Golf aid used by numerous PGA players and endorsed by former touring pro and current golf analyst Jerry Foltz * Designed to teach perfect putting technique; laser technology provides immediate feedback regarding putter face alignment at impact * Practicing regularly will develop proper muscle memory to address ball squarely when putting, boosting confidence * Focus more on reading breaks and speed of the green * Includes Greens Professor unit, putter mirror, three replacement mirror adhesives, Jerry Foltz instructional DVD, and quick start guide