SD-15 The Jack | Subscription

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Regular price $15.00
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Helps keep you straight.

The Jack is Seed's take on an alignment device, designed to help improve your putting accuracy, alignment and stroke.

The two large side circles create a strong visual alignment aid, allowing you to more easily line the ball to the hole.

The circle device also provides an instant diagnostic tool for the putting stroke, swing path and strike.

A balanced and centred stroke will result in the ball rolling true and straight, with the circles creating a visual affirmation (straight, clean roll). An open or closed putter face, an overly inside or across the line stroke will all cause the circles to “wobble” after impact, indicating a less than perfect strike.

The off-centre roll provides immediate visual feedback regarding the stroke and path. If stroke is an issue, the golfer also can turn the ball 90° and visually see the skid, spin and roll characteristics of the ball from their stroke.

This can be very useful for teaching professionals or anyone who is videoing the putting action looking for more visual feedback.

In research conducted by Seed, 86% of golfers found improved results on 6ft putts by using The Jack over traditional single line alignment device.

The Jack alignment device is available in the SD-01 The Pro one and the SD-15 the country mile. 

What the FAQ - Subscriptions

There are two ways to buy from Seed. You can Subscribe for a ongoing, regular delivery and get them shipped as and when you want, or you can place a normal ‘once-off’ internet purchase.

Subscription products will always include "Subscription in the title" if you're looking to. avoid them.

You'll have to create an account by clicking the account icon in the top right hand corner of the site. Once your account is created, login>manage subscription>edit beside items and simply add the product you want and delete the old product after.

You can cancel/pause/modify at anytime, for any reason with just a few clicks. Jut log into your My Account page, and click on Manage Subscription. We hope you stay but we don’t make it hard to leave.

No. You choose when you want balls delivered. Once a month, once every two months, once every three months… it’s up to you. You can adjust whenever you want also.

You get access to the lowest possible ball prices without having to buy in bulk. You decide when you want them and we’ll deliver them straight to your door. You’ll save money and feel like a genius out there.

Customer Reviews

Based on 3 reviews
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R
Russell Hess
I’m loving these SD-15’s

I’ve always just used cheap golf balls and whatever I would find on the course. This is the first time I’ve exclusively used one brand and model of golf ball and it has definitely improved my game. My drives seem a little longer, the balls seem to fly a little higher of my irons and the aiming marks on the balls definitely have helped me improve my putting. It is hard to explain what I mean, but they just “feel good” to hit.

C
Clifford Huckaby
Quality Golf Balls

Very good golf balls that are affordable.

D
David Cronon
Great ball. Lowest round ever.

I never hit a golf ball longer or straighter on my way to my lowest round ever. 70 was just what my game needed. Love the design. Thanks guys. Will be ordering more soon. Wait...i already have!!!!

Premium, professional quality golf balls are really difficult to make.

And that usually means they’re expensive.

At Seed, our products are developed by a small team of industry experts, young designers and experienced engineers. We focus on a core product range, offering maximum performance for the best value around.

We are obsessed with lowering the cost of premium balls, no doubt about that, but we’re just as obsessed with performance. It’s one of the reasons our SD-01 was named as the Official Ball of the PGA EuroPro Tour. We make every effort to provide the best possible value for you, within an proven design concept.

Choosing the right ball can be confusing, so rather than offering ten (or twenty) different golf ball models, we focus on the best model for a specific performance category. This leads to significant cost savings in the development as well as in the production process.

It’s a little known fact, but USGA and R&A performance regulations mean golf ball designers are somewhat restricted with what they can do performance wise. There’s only so much speed (i.e. launch/distance) we can put into a design and still be conforming, so that tends to limit the designers a little when pushing the development of the core and mantle layers. Our design process focused heavily around aerodynamic performance (fluid dynamics more specifically) particularly Magnus and aerodynamic force & the subsequent effects on lift and drag.

For a golfer, this translates into three important performance criteria – launch angle/ball speed, distance and spin/feel.

We’ve independently tested Seed and results confirm Seed balls compare favourably with the major brands.

Balls have been tested with a robotic swing machine and with groups of ‘real’ golfers. Swing parameters were set to identical for each Swing Robot Test and Real Golfers were given multiple shots with each ball, with results averaged. Balls have also been tested at the USGA Performance Lab and undergone extensive factory testing.

All area’s of performance have been considered with design integrity and performance consistency being key. Testing involves collecting data from numerous parameters included external parameters such as set up, club specifications, swing type, attack angle, swing plan, weather and launch conditions.

We’ve independently tested Seed and results confirm Seed balls compare favourably with the major brands.

Balls have been tested with a robotic swing machine and with groups of ‘real’ golfers. Swing parameters were set to identical for each Swing Robot Test and Real Golfers were given multiple shots with each ball, with results averaged. Balls have also been tested at the USGA Performance Lab and undergone extensive factory testing.

All area’s of performance have been considered with design integrity and performance consistency being key. Testing involves collecting data from numerous parameters included external parameters such as set up, club specifications, swing type, attack angle, swing plan, weather and launch conditions.

INDEPENDENTLY TESTED