Increased accuracy The ball is marked with clear straight lines that help guide its travel path. The design is doublesided and includes two marking pens in different colors for easy differentiation. Waterproof and quick drying The marking ink is oilbased, waterproof, and quick drying. Imprints stay vivid and longlasting, and the colors won't fade in use. Improved putting The visible lines indicate the ball's resting position on the green and create a precise alignment reference between the ball markings and the putter. This supports better aim and consistency, even when viewed from the tee. Easy to use Suitable for use on standard golf balls both on and off the course. Simply apply neat straight lines with the included marking pens, then easily pick up the ball. What you get Includes two marking pens in different colors and a doublesided marking design for versatile use. Use scenarios Practice greens: mark your ball to practice consistent putt alignment before you stroke. On course practice: quickly verify alignment from the tee or fairway to improve aim during rounds. Home or range setup: prepare and refine your alignment routine off the course, then transfer the markings to balls used on the course.