EyeLine GolfMyroll 2-Color Golf Ball - Training Aid for Stroke/Practice Putting. See Alignment, Perfect or Imperfect roll, Side Spin or top-Over-Bottom roll. Indoor Outdoor, Pack of 3 (Black/White)

I always thought I was a good putter...boy, was I wrong. These helped me realize I swipe across the ball...resulting in misses (especially under pressure). I now start my putting practice by hitting these until I get a tru roll. If you go to YouTube, you can find videos of PGA pros rolling their putts perfectly (watch the alignment markings on the ball). My putts are getting close to being this good. Two thumbs up!

They have helped me with roll. Such great feedback

I really wanted to enjoy this product. The mirror alignment for shoulder and I position is very well thought out… But I left it in the cart basket and it has deformed on account of the heat. The ball no longer sits on the turf when the mirror is in position because of the bend.I’ve tried bending it back… But since it’s a thermal plastic… It has a memory.$60 US… you would’ve thought they would’ve use a better quality material that is more heat resistant… Florida golf.

EyeLine’s MyRoll balls are a tremendous help on the greens! They are very easy to use and show you exactly what is happening at impact, such as whether or not the putter face is square at impact. These balls work perfectly with many of EyeLine’s other products as well, especially the Putting Alignment Mirror and the EDGE rail. Love this product and would highly recommend!

The Eyeline Myroll 2-Color Golf Balls are a simple but very effective way of how the ball should roll and improve your alignment at the same time! Great Tool!

As a putting instructor I have used a fat line on the ball to see if the ball is rolling end over end or wobbling. I find the 2-colored balls much easier to see and align. I especially like how I can video the ball from the side in slow motion on my phone to see exactly what the ball is doing off the face. This helps tremendously with the fitting process as well.

The red lines are not square with the black/white hemispheres. You can ignore the red and see if you get a good roll but it was frustrating while I tried to figure out why I was lining up wrong. They also don't have a great feel when hit - they used a very low-quality ball.

The little red arrows r misprinted off center line — poor quality control—otherwise great concept

The balls help you to putt straight. Two hemispheres one painted black the other white. £20 for 3 balls mind. That's more than Pro V1 x.