Eyeline Putting System

The Eyeline Putting Alignment system is supposed to help you work out your alignment issues.

Eyeline writes:

With the Putting Plane Alignment System you can easily use the mirrored surface to check if your eyes are over the ball, shoulders are lined up, and the putter face is square. Its adjustable rails enable you to practice a perfect back and through stroke that is on plane. The angled rail allows the putter to come slightly inside as it moves back and up