[PURPOSE] The putting training aid is designed to check your alignment, eye position, and shoulder alignment. [IMPROVE YOUR SKILL] Improve green reading and protect the environment. Excellent golf training aid, improves alignment. [FEATURES]: The putting trainer is designed to identify putts you hit straight and that start rolling online, the putting trainer has an aiming line to help you aim your putt on the exact chosen line for your putt, the trainer's eye position stripes allow you to verify consistent eye position at address, consistent eye position is crucial for good putting fundamentals, the trainer's flat back edge helps you square your putter face at address. [EASY TO USE]: Suitable for golf beginners or advanced golfers. GOLF BALL NOT INCLUDED. [PERFECT FOR ALL SKILL LEVELS]: Learn how much putts break by simply adjusting the aim of the putting trainer higher or lower until well-struck putts go in. Perfect for all skill levels. Derivative series: Golf Trainer Type: Golf Trainer Size: 221x130x65mm Material: Composite Plastic Color: Black Package Contents: 1 x Golf Trainer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.