Review on Enhanced Glow-Effect Illumination for Nighttime Outdoor Competitions by Darian Massey

later Well the cups worked for beer pong. Like, like, something like. The transparent cups were actually cool at first, but they made it really difficult to photograph. 2 LEDs came DOA. I got one to work by taking it apart and pressing the contacts together. the other just fell apart inside. Balls do not react to ultraviolet light. Played under a black light, the pong ball didn't glow at all. Regular white pong balls worked better for this