Good alignment aide.
Great for affirmation of putterhead alignment. Shoulder mirror also affirms shoulders are aligned with putter. Gate holes weren’t wide enough for my putter but not a critical aspect for me.

Shoulder Mirror with Closed shoulders
My 16 son putting stroke was so off. With recent growth he felt as if shoulders where square. Well they where not at all. We needed the Shoulder Mirror to show him his shoulders where closed. Feel of a golf putting stroke or swing is never what others see. Golfers need to see it with there own eye. Dr. Thomas J Finn

Definitely improved my putts of less than 12 ft.

Essential tool for serious golfers
Feedback is critical to getting your self squared up and your eyes over the ball. This is the best way to get that grooved.

Great Practice Tool!!!
Simple tool. Incredibly effective

Putting Alignment minor
Thanks nice eye line to Target

Great Training Aid
When it comes to golf training aids, many don’t do very much. The eyeline putting mirror will fix your alignment and eye position pretty much immediately. Great bang for your buck for something that will immediately help your putting stroke and help shave strokes off of your game. 10/10 would recommend
Putter and shoulder mirror
Have not used on course yet

Putter and shoulder mirror
Have not used on course yet