4Pcs Golf Putting Practice Double Layer Game Ball White Black Ball Black Dot Ball

Feature: 1. Double‑layer game ball, inner layer of synthetic rubber, outer shell made for sarin material, good elasticity, smoother appearance, strong hitting resistance, more stable hitting and longer distance. 2. Special 332 wind tunnel design, the average depth of each hole is about 0.025 cm, reducing air resistance, increasing fly stability and fly distance. 3. The black dot represents the ball marking line, which is suitable for all kinds of golf courses. During practice, you can cultivate a sense of direction and adjust the putting direction. 4. Let golfers master putting technique faster and play better in the game. 5. Each ball has a corresponding black dot, which is easy to distinguish. Specification: Item type: Golf Putting Practice BallMaterial: Synthetic rubber + for sarinColor: white blackDiameter: Approx. 42.67mm 1.7inWeight: Approx. 188gHits: more than 1000 times Elasticity: more than 80percent Number of wind tunnels: 332 . Package List: 4 x Golf Putting Practice Ball