The ifrothgolf review
A flat, mirrored alignment plate you set on the green or floor and putt over. The printed lines show whether your eyes sit over the ball, whether your putter face is square at address, and whether your ball position is consistent. Slots let you push tees in to form a gate so you can groove centre-face contact, and a separate hole lets you practise accelerating through impact.
What's great
The feedback is immediate and unflattering in the best way: you can see your eyeline drift or an open face the moment you look down, which is hard to fool yourself about. It is genuinely pocket-sized so it travels to the course for warm-ups and lives easily on a hallway carpet. The tee-gate drill is simple and effective for tidying up strike, and it works the same for lefties.
Worth knowing
It only trains the first few feet of setup and stroke; it does nothing for distance control, green reading or longer putts, so it is a fundamentals tool rather than a complete system. The acrylic mirror scratches if you are careless with tees or chuck it in loose, and on grainy or uneven greens it will not sit perfectly flat. Pricing swings a lot by retailer and the extra shoulder mirror is sold separately, so the headline number is not the whole spend.
The verdict
If your short putts wander and you suspect your setup, this is one of the cheapest ways to find out for certain. It will not magically hole more 20-footers, but it fixes the basics that ruin the short ones, and it is small enough that you will actually keep using it.
