Your handscan't fakethis stroke.
Shop the trainer — $129A putting trainer with a weighted string where the shaft should be. Swing smoothly from the shoulders and it rolls true. Jab, push or flip your wrists and the head collapses, so you feel the fault the moment it happens.
A weight on a string can't be steered.
Whirl a weight on a string and it travels a clean arc on its own. Push it, and it folds. We built that into a putter: the only way to keep the string taut through the ball is a smooth, accelerating pendulum from the shoulders.
- Nothing to grip, nothing to steer. Control moves from your hands to your shoulders.
- Same tempo, same speed. Builds the tempo and distance control that lag putting depends on.
- Five minutes before a round. Groove it, then pick up your gamer. The feel comes with you.
Most aids show you the miss. This one lets you feel the stroke that caused it.
01
Feedback during the stroke
Alignment aids tell you afterwards. The string reacts the instant your hands take over, so the fix happens mid-stroke.
02
Trains tempo, not just a line
The string only stays taut through a smooth, accelerating stroke, the part of distance control most drills skip.
03
Real putts, 15 seconds of prep
A training aid you hit real putts with. No mats, sticks or apps: loosen the string, then hit balls on the carpet, the practice green or before a round.
“A fabulous tool to teach with and to learn how to develop a putting stroke with tempo. It is terrific for learning a passive transition from the backstroke to the forward stroke while maintaining a consistent speed with the putter head.”
This thing will not lie
I was so skeptical when I opened the package. I always knew my hands were a problem, especially in transition. I’ve done the sticks under the armpits, tied together under the hands, and you can fake that. The String Theory did it. Grip pressure and, most importantly, how it feels at transition. This thing will not lie, and it translates easily to a regular setup with a regular putter.
A calm, controlled cadence
I 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.
Takes the hands out of it
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.
A coach’s view
This is a great teaching tool. I really like watching my students use this and watching the feedback they get from their putting stroke.
Tempo and feel
Great for dialing in tempo and feel.
Bought as a gift
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.
Already seeing improvement
The product is high quality and we are already seeing improvement in our short game. Customer service was top notch and the putter was delivered in a timely fashion. Highly recommend!
Lots of feedback
Great product with a lot of feedback when using it.
Immediate
Helped my putting immediately!
Confidence on every putt
I feel I have confidence with every putt and my putting stats have shown marked improvement.
String Theory Putting Trainer
$129.00
Length
Hand
Free US shipping · Ships in 3–5 business days from Maryland · 30-day returns · Returns
Full details & photos: Men’s 35" · Women’s 32" · Junior's 30"
- Patented weighted-string shaft · US Patent #10,857,443
- Hit real putts on the carpet or the practice green
- No batteries, no app. 15 seconds of prep, then putt. Stows in your bag
Still deciding?
Still unsure? Talk to Ben, the inventor: Ben@stringtheorygolf.com or (929) 443-9738.
How is this different from gates, mirrors and rails?
Those show you where the putt went after the fact. String Theory reacts during the stroke: the moment your hands push, jab or flip, the string goes slack and the head collapses, so you feel the fault and fix it on the next one.
How long does it take to learn?
Most golfers find the motion in one 10–15 minute session. After that, five minutes before a round or a practice session is enough to groove your tempo.
Can I hit real balls with it?
Yes. It isn’t a real putter, it’s a training aid that lets you hit putts as if it were one. Use it on the carpet, the practice green or while warming up, on putts inside about 10 feet.
Do I have to change my stance or setup?
Only while you use the String Theory: stand a touch closer so the string hangs straight down from your hands. Back with your regular putter, take your normal stance and the feel of the swing transfers without you thinking about it. String Theory plus a closer stance builds the skill. Your regular putter plus your normal stance is where it pays off.
Can I hit long putts with it?
It isn’t really meant for long putts. Anything inside 10 feet is the distance to work on your stroke. When you go back to your regular putter, long putts feel easier too, because the feel of a true stroke stays with you.
I use a mallet, a heel-shafted or a long putter. Does that matter?
No. You’re building the feel of rhythm in your stroke, and that feel doesn’t change with the style of putter. Train with the String Theory and putt with any putter you prefer.
Which length should I choose?
Pick the length closest to your current putter: 35" men’s, 32" women’s, or 30" junior. Every length comes in right- and left-handed.
How much is shipping, and how fast?
Shipping is free on all US orders. Orders are processed and fulfilled within 3–5 business days from our warehouse in Maryland. We also ship internationally; international buyers pay any duties and import taxes to customs when the package arrives.
What if it isn’t for me?
Use it for 30 days. If it isn’t helping your stroke, email ben@stringtheorygolf.com to start a return, and we’ll refund you in full. Return shipping is paid by the customer, and the 30-day return applies to US orders. Tried it on the carpet or the practice green? That’s fine. No tags or original packaging required.