SD-15 Country Mile - The Jack
SD-15 Country Mile - The Jack
SD-15 Country Mile - The Jack
SD-15 Country Mile - The Jack

SD-15 Country Mile - The Jack

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Buy 1 £20.00 Each
Buy 2 £19.00 Each
Buy 3 £18.00 Each
Buy 4 £17.00 Each
Buy 5 £15.00 Each (FREE SHIPPING)

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. 

Buy in bulk & save up to £5 a dozen. You can also Mix & Match between the Whites, Green, Reds and Jacks to avail of this bulk pricing. Buy with friends or stock up yourself.

If you don't want to buy in Bulk, remember you can avail of this low price(£15/box) by Subscribing Here.

Customer Reviews

Based on 12 reviews
Terry Hendley

Best ever 👍👍🏌🏻‍♂️🏌🏻‍♂️

Tim Coles
SD Country Mile Golf Balls

The jack balls are great! especially lining the ball up when on the green.
Great value for money too.


Good feeling ball nice on the green

Chris Talbott
First time user

This is a cracking ball. I have gone with the SD-15 to use as my winter ball. Really impressed. The description that it’s equivalent to AD333 is spot on. Great value for money.

Jack Kiely
No issues

Arrived on time and without issue. I have not had a chance to use the golf balls yet, but I’m looking forward to same.