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

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 13 reviews
Liam Treanor
Golf balls

Played with these balls for the first time last week. They feel great with every club and especially off the putter. I love the alignment aids too. Will definitely be using these from now on.

Tim Webb
Love these

Been subscribing to these for about 6 months now and love them.

Alignment markers are great and have helped with putting. Distance all good and they last well. Very distinctive on the course so obviously mine when I lose one in the rough!

Keith Mills

Very pleased with the seed ball , value for money and quality of product second to none.

Anthony Daly
Great ball easy to align

Great ball, long of the tee and easy to line up on the green

Superb balls at a great price

Superb balls at a great price , not to mention speed of delivery as well very simple 10/10