Seed SD-15 The Jack | Subscription
Seed SD-15 The Jack | Subscription
Seed SD-15 The Jack | Subscription

Seed SD-15 The Jack | Subscription

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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. 

Customer Reviews

Based on 15 reviews
Michael Hutchinson (Dublin, IE)
Age: 68
Handicap: 23
The Country Mile

Very reasonably priced ball. Does what it said on the tin. I Love them 🏌️‍♂️

Paul S. (Dublin, IE)
Age: 45
Great ball for putting alignment

Good hard wearing ball. Doesn't scuff easy and is very good for putting alignment.

Conor Hughes (Shannon, IE)
Age: 52
Handicap: 18
Love the feel of Seed balls

I just started playing the Seed - SD 15. Love how they feel around the green.
I fade a lot of other shots and no one golf ball ever lasts more than a round without being knicked. These don't!

Hugh Grainger (Dublin, IE)

Seed SD-15 The Jack | Subscription

Stig Berntsen (Oslo, NO)
Age: 54
Handicap: 14.7
SD-15 The Jack

Nice feel on short game, Nice sound when hitting it. This is as "pro" as a golfball can be. Love it!