Great for dialing in tempo and feel.
Price:
$115.00
Regular price:
Stop Jabby Strokes From Ruining Your Round.
Control speed and start line, make more putts, and have confidence under pressure.
Comes in custom carry case!
When your tempo changes, your speed changes. That's why putts end up short or blow past. The patented weighted-string shaft only swings cleanly when you make a true pendulum stroke. Let your hands take over, decelerate, or jab at the ball, and you feel it instantly.
Most golfers get the feel within 10–15 minutes. After that, a few minutes a day builds a rhythm you can trust.
- 30" junior length, right- or left-handed
- US Patent #10,857,443
- Featured in the Inventor's Spotlight at the 2025 PGA Show
String Theory Putting Trainer – Junior's 30"
$115.00
How It Trains You
The patented weighted-string design allows you to hit real putts while training a smooth, repeatable putting tempo.
Unlike static training aids, String Theory provides instant feedback when your tempo becomes jabby, rushed, or inconsistent.
Over time, you learn to swing the putterhead naturally and develop reliable rhythm and tempo.
Swing like it's a weight on a string
Product Benefits
- Eliminates jabby strokes and yips
- Builds distance control
- Repeatable stroke
- Completely portable product
Customer Reviews
Overall rating: 4.5 / 5 from 20 reviews.
It’s not a realistic training aid when it comes to a putting stroke
String Theory Putting Trainer – Men’s 35"
Store owner replied: It will feel different than when using your normal putter. It is not a real putter, it is a training aid designed to help you develop the skill of rhythm. Just like you might train with a heavy or flexible club for your full swing, you wouldn't swing your normal club exactly at the same speed, so to here, you are not necessarily swinging at an identical pace with you normal putter.
Great gift for the golf lover in your family! My dad has been using this weekly and is rethinking his approach to putting. Early returns are fantastic and his short game is only improving.
Great product for tempo
I teach a lot of kids and I think if the shaft was a little stiffer it would help.
Great trainer. Helps prevent you dragging the handle and releasing putter head
Helped my putting immediately!
Great product with a lot of feedback when using it.
The String Theory Golf Putting Trainer is a fabulous tool to teach with and learn how to develop a putting stroke with TEMPO! It is terrific at learning a passive transition from the backstroke to the forward stroke, while maintaining a consistent speed with the putter head. (Be advised. If you struggle with speed control, be patient as you teach yourself how the String Theory Putter is used) George Pinnell, PGA
This is a great teaching tool. I really like watching my students use this and watching the feedback they get from their putting stroke.
I recently asked the best putter I know how to get better at lag putting; he said, "look up String Theory Putting." This aid is exactly what I needed. Teaches you to use your shoulders to create a calm and controlled cadence for your putting stroke. Also a nice reminder on tempo for your full swing. Great product!
What a great gift for the golfer of any level of experience. The product is high quality and we are already seeing improvement in our short game. Customer service was top notch and the String Theory Putter was delivered in a timely fashion. Highly recommend!!! ⭐️⭐️⭐️⭐️⭐️
I’m a 2 handicap I find it very difficult to use can’t wait until I master it
It is a nice concept. My problem was that because the “String” is so supple, the club must be addressed directly on top of the ball with the hands for that pendulum action to truly work. I find that difficult place to get set up in and make it work in its true pendulum action. Thanks, Don Sargent PGA Member Golf Magazine Top 100 Teacher SOPGA Section, Hall of Fame
String Theory Putter - Training Aid
Store owner replied: Don, thanks for your feedback. Indeed one of the adjustments you must make in training with the StringTheory is that of standing closer to the ball. However, it is by no means your "new" stance. Simply return to your normal putting set-up with your regular putter. You will not have to change anything about your current set-up, yet the feel of a true swinging motion will have carried over. Regards, -Ben
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I was so skeptical when i opened the package and tried it the first few times. I always knew that my hands were a problem especially in transition. Ive done the sticks under arm pits tied together under the hands and you can fake that and it will not translate. THE STRING TREORY DID!!!!!! Notably for me, grip pressure and most importantly how it feels at transition. This thing will not lie and it translates easily to regular setup with a regular putter.
Nice training aid, great for tempo and timing. It only comes in a right handed configuration, so as a lefty, the grip is upside-down which feels awkward.
Does a good job of making you aware of your hands as you practice.
This is one of the best training aids on the market. To putt well, you have to prevent your hands from taking over the stroke. This device cures this common putting fault.
Super fun and challenging. Funny too. Great for golf outings.
Price:
$115.00
Regular price:
• Forces a true pendulum motion every rep
• Smooth strokes stay quiet and balanced
• Rushed or jabby strokes and yips create instant feedback
• Exposes deceleration through impact
• Trains rhythm through feel — not mechanics
• Builds repeatable distance control naturally
Men's RH - Red Grip
Length: 35''
For a limited time, we are offering free shipping on all domestic orders. Orders are processed and fulfilled within 3 to 5 business days from our warehouse in New York.
We offering a 30-day risk-free on all orders, if you are unhappy with the String Theory Putter, reach out to us within 30 days for a full refund. Visit our policy for more information.
Now comes in custom carry case
- Easy for travel
- Stores well in most golf bags
