Feature:1. It emits bright fluorescence in the dark, allowing players to quickly and accurately locate the ball at night.2. No battery is needed. Charged by sunlight and flashlight, it automatically absorbs light and glows in dark places.3. In golf balls, there are dual fluorescent layer, making them brighter than other golf balls and giving them a longer light-emitting time.4. The inner layer is synthetic rubber and the outer layer is synthetic resins and fluorescent powder, they are no different from ordinary golf balls in terms of quality and feel.5. This is the perfect golf gift for golf lovers, family, business partners or close friends, they will like it!Specification:Item Type: Glow Golf BallsInner Material: Synthetic RubberOuter Material: Synthetic Resins + Fluorescent PowderProduct Color: As Pictures Shown Product Diameter: Approx. 42.67 mm/1.7 inProduct Weight: Approx. 485gWind Tunnel: 332pcsFeatures: Automatically absorb light and emit light in dark places.Package List:12 xGlow Golf Balls