Improve your accuracy: The Professional Golf Ball Liner Markers Pen is designed to enhance alignment, helping you set up with confidence and consistency. Portable and convenient: This marker pen features a hang hook and can easily be attached to your keychain or neck rope, making it compact and simple to carry wherever you go. Fastdrying and waterproof ink: The oilbased ink dries quickly, and your alignment marks stay visible even in wet conditions, providing durability for all your golfing needs. Lightweight design: Weighing just 6 g and measuring 90 x 12 mm, this marker is designed for effortless portability without sacrificing functionality. Use scenarios Driving range practice: Mark a reference alignment line on the ball to repeat your setup with greater consistency during every swing. On the course in wet conditions: The fastdrying oilbased ink remains visible through moisture, helping you maintain alignment in damp or rainy conditions. Travel or warmups: The compact size and hang hook allow you to attach the marker to your keychain, bag, or neck rope for quick access between rounds or during preshot routines.