Written by Steve — a low-handicap club golfer at Clandon Regis GC in Surrey, with nearly 40 years in the game. Every review is independent and written for UK club golfers.
Putting is where handicaps are quietly won and lost, and yet most of us practise it by rolling a few balls and hoping. The EyeLine Golf Putting Mirror is the aid that promises to make that practice actually count — a flat, reflective plate you set behind the ball so you can see, for the first time, exactly what your eyes, shoulders and putter face are doing at address. It is used by a remarkable number of tour players, which is either a genuine endorsement or clever marketing, depending on how cynical you are. So does a mirror really help you hole more putts? Here is an honest look at what it does, where it helps most, its limits, and whether it earns a place on your mat.
We have not lived with one across a full season ourselves, but we have gathered what the coaches, testers and thousands of everyday golfers report after practising with it — the real benefits and the catches.
What is the EyeLine Putting Mirror?
The EyeLine Putting Mirror is a putting alignment aid: a rectangular mirror you place on the green or your putting mat, just behind the ball, so you can look down and see a reflection of your setup. It does not move the ball, measure anything or connect to an app. It simply shows you the truth about your address position — and that turns out to be surprisingly powerful.
Printed on the mirror are alignment lines and a set of slots. The lines let you square the putter face and check ball position; the slots take tees or posts so you can build a “gate” for the putter or the ball to pass through. It works for right- and left-handers, and it packs flat, so it lives on a shelf or in a bag between sessions.
How it actually helps your putting
The value of a mirror is that it removes guesswork. You cannot see your own eyes or shoulders when you putt — you feel a position and assume it is correct. Very often it is not: eyes set inside or outside the ball, shoulders aimed left or right, the ball creeping too far forward. All of these push putts offline before the stroke even starts, and none of them are visible without help.
The mirror makes them visible instantly. Set up over it and you see, in real time, whether your eyes are directly over the ball, whether your shoulders are square, and whether the ball sits where you think it does. Fix what the mirror shows, groove that feeling, and you take a whole category of aiming errors out of your putting.
The point is that most missed short putts are setup faults, not stroke faults. A mirror attacks the cause rather than the symptom, which is why it is one of the most recommended putting aids there is.
The alignment lines and the gate
Two features do most of the work, and it is worth understanding both.
The alignment lines are the everyday tool. A central line shows your intended start line and helps you square the putter face to it; further lines and reference points let you check that your eyes are over the ball and that ball position is consistent. This is the part you will use every session — a quick setup check that keeps your fundamentals honest.
The gate slots are for stroke and strike work. Push two tees into the slots just wider than your putter head and you have a gate the putter must swing through without clipping either tee — instant feedback on path and face control. Set a narrower gate around the ball’s contact point and you train centre-face strike, which matters more for pace and consistency than most golfers realise. A slightly off-centre hit rolls shorter and wobblier, and the gate teaches you to find the sweet spot.
Used together, the lines fix where you aim and the gates fix how you deliver the putter. That combination is what makes it more than just a mirror.
Small or large: which should you buy?
This is the main decision, and it comes down to where you will use it.
The small (alignment) mirror, roughly 12 by 6 inches, is the portable choice. It slips into a golf bag with its carry pouch, so you can take it to the practice green for a warm-up before a round. The trade-off is size: it shows your eyes, ball position and putter face, but it is too small to reflect your shoulders.
The large (classic) mirror, around 18 by 12 inches, gives the fuller picture. It reflects your eyes, shoulders, posture and ball position all at once, so it is the better tool for genuine practice and for anyone working on shoulder alignment. The catch is that it is too big to carry in a bag — it is a home or fixed-green aid.
If you mainly want a pre-round alignment check you can carry, get the small one. If you want a proper practice tool for the mat at home and do not need to travel with it, the large one tells you more. Serious grinders sometimes own both, but for most club golfers one or the other is plenty.
What results can you expect?
Honestly, the gains here are about consistency rather than a dramatic overnight drop in putts. What the mirror reliably fixes is your setup — squarer aim, eyes in the right place, a repeatable ball position and better centre-strike. Those are the foundations of holing more short putts and starting longer ones on line.
The realistic outcome is fewer of those maddening three-footers that lip out because you aimed a fraction off, and more putts that at least start where you intended. It will not read greens for you, it will not fix a jabby stroke tempo, and it cannot manufacture touch on lag putts. But for the setup half of putting — which is a bigger half than most people admit — it is genuinely effective, and the improvement holds up as long as you keep checking in with it.
Treat it as a tool that removes errors rather than one that adds magic, and you will not be disappointed.
What the EyeLine mirror does well
Its greatest strength is that it shows you the truth. Feel is unreliable in putting, and the mirror replaces “I think I’m square” with “I can see I’m square.” That instant, honest feedback is exactly what makes practice productive rather than repetitive.
It is also simple and durable. There is nothing to charge, update or break, the price is modest next to electronic putting aids, and it works the moment you put it down. The gate slots add real versatility, so one flat plate covers alignment, path and strike drills.
And it is backed by serious adoption. A large share of the world’s top players keep one in their setup, which tells you the fundamentals it trains are the same ones the best in the game care about — not a gimmick aimed only at amateurs.
Where it falls short
The honest caveats are worth knowing. First, a mirror only helps if you use it correctly and regularly — it is a practice discipline, not a quick fix. Set up carelessly over it and you will simply groove your errors with a mirror underneath them.
Second, the small version’s biggest limitation is that it cannot show your shoulders, which are a common source of aim error; if shoulder alignment is your issue, you need the large mirror or a separate shoulder aid. Third, it does nothing for the parts of putting that happen away from setup — green reading, pace control and nerve under pressure are all untouched, so it is only ever half the putting picture.
Finally, on a real green the mirror sits on the surface rather than being perfectly flush, so it is best on a flat section or a putting mat; it is not something you leave down for full-speed lag work. None of this makes it a poor buy — it just means it is a setup-and-stroke tool, not a complete putting solution.
Who is it for?
The EyeLine mirror is a strong fit for any golfer who misses too many short putts and suspects their aim or setup is the culprit — which is most of us. If you practise putting at home on a mat, or like to warm up properly on the practice green before a round, it slots straight into that routine and makes it count.
It is a weaker fit for the golfer whose real problem is pace and lag putting, or green reading, since the mirror does not address either. And if you specifically need to see your shoulders, make sure you buy the large version rather than the compact one.
Is the EyeLine Putting Mirror worth it?
For most club golfers, yes — it is one of the best-value putting aids you can buy. Putting setup faults are common, invisible and costly, and the mirror fixes exactly those for a modest outlay and no running cost. If you will actually use it a couple of times a week, it pays for itself in holed short putts quickly.
The golfers who should think twice are those whose putting weakness is pace or reading greens rather than aim — for them the money is better spent elsewhere. If you are weighing it against the other leading options, we cover the full field, including pressure trainers and putting gates, in our guide to the best putting training aids for UK club golfers.
Frequently Asked Questions
Does the EyeLine Putting Mirror actually improve your putting?
For most golfers, yes — it fixes setup faults you cannot otherwise see. By showing your eye position, shoulder alignment, ball position and putter face at address, it removes the aiming errors behind a lot of missed short putts. It does not help with green reading or pace, so it improves the setup half of putting rather than all of it.
Should I buy the small or large EyeLine mirror?
Buy the small one if you want a portable aid that fits your golf bag for pre-round warm-ups; it shows your eyes, ball position and face but not your shoulders. Buy the large one for fuller practice at home, since it reflects your shoulders and posture too. It is bigger and does not travel, but it tells you more.
What are the gate slots on the mirror for?
The slots hold tees or posts so you can build a “gate” for practice. A gate just wider than your putter head trains a square path and face through the ball; a gate around the ball’s contact point trains centre-face strike. They turn the mirror from a pure alignment aid into a stroke and strike trainer as well.
Can I use the EyeLine mirror on a real green?
Yes, but it works best on a flat section or a putting mat, since it sits on the surface rather than perfectly flush. It is ideal for setup checks and short-putt drills before a round. For full-speed lag putting you would lift it, so treat it as a setup and short-game tool rather than something you leave down for long putts.
Is the EyeLine mirror suitable for left-handed golfers?
Yes. The mirror is symmetrical and marked for both right- and left-handed players, so the alignment lines, reference points and gate slots all work the same way whichever way round you putt.