PURPOSE Putting training aid tool is created to check your alignment, eye position and shoulder alignment.IMPROVE YOUR SKILL Improve green reading and protect the environment. Good training aid for golf putting, improve posture alignmentFEATURES The putting tutor is designed to identify the putts you hit straight and start rolling online, the putting tutor has a guideline to help you aim your putt on the eact chosen line for your putt, the tutors eye position stripes allow you to verify consistent eye position at address, consistent eye position is essential for good putting fundamentals, the tutors flat back edge helps you align your putter face at address.EASY TO USE Suitable for golf beginners or advanced golfers. GOLF BALL NOT INCLUDED.GOOD FOR ALL SKILL LEVELS Learn how much putts break by simply adjusting the aim of the putting tutor higher or lower until wellhit putts go in. Perfect for all skill levelsDerivative Series Golf Putting TrainerType Golf Putting Trainersize22113065mmMaterialComposite plasticColorBlackPackage contents1 Golf Putting TrainerOnly the above package contents, other products are not included.Note Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is 13 cm.