Features: Unlike any standard golf ball, our simulator ball features high visibility dot printed on all six sides. This unique design ensures launches monitor camera captures a consistent and clear marking from every possible impacts angles, delivering rotating and launch data accuracy for your indoor practice. Specially engineered for use in golf simulators. The softer construction is gentle on impacts screens and indoor net, while the enduring, none marking finish protects your floors and equipment, ensuring none worry practice at home or in commercial facilities. The prominent dots pattern provides immediate visual confirmation of your strikes location. Train yourself to find the clubface's sweet spots more consistently, reduce mishits, and build a more stable swing. Suitable for coaches and friend to observe data and share skills with each other, enhancing interactive experience, especially suitable for team training. Specifications: Inner Component: Rubber Diameter: about 4.27cm/1.68inch Diameter: 42.7±0.1mm Compressions hardness: 85 Package Includes: 3pcs Indoor Simulators Dedicated Golf Balls note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.