I just received this, I was a little hesitant because there weren't any reviews. But I am here to tell you that it is actually good. The cops are very thick and sturdy. You're literally just sticking things onto the cup. The light works and has the ability to flash at a high rate or a slow rate. It also can stay a solid color. I also like that you can turn the light on and off so you don't waste battery . I bought this for Halloween obviously but for beer pong. It was definitely worth the money I would highly recommendOnce you put the lights under the cup, it tilts. So I am afraid it’s going to spill very easy cuz it won’t stay flat on the table.