GlowKnights Glow Golf Balls - 4 Per Pack, 8 Glow Stick Inserts. Perfect for Night Golf and to Practice Long Range and Distance Shots Every pack consists of 4 BALLS and 8 GLOW STICK inserts. 2 of each colour: BLUE, GREEN, PINK and RED. Glows for 8 - 12 HOURS. Complete set for 4 PLAYERS and a 2 GAMES BETTER THAN THE LED BALLS because these are guaranteed to work. Each ball uses a 1.5" Glow Stick insert and no batteries or electronics are needed. So you will never have to worry about faulty electronics or batteries These balls are REGULATION SIZE AND WEIGHT and are extremely durable which means they are perfect for the serious golfer and social golfer STRONG ENOUGH TO WITHSTAND THE IMPACT OF A DRIVER. All of our balls are extremely strong so you don;'t have to worry about breaking a ball. These balls can be REUSED for as long as you want. 8 Glow Sticks are included so you can play 2 games with four players to start off with.