Speed stacks

Yesterday, I figured out that I don't have the right cups to cup stack but my dad got these cups called speed stacks and they are the right kind of cups to cup stack but I have to share them with izzy because they were very expensive and the reason why the other cups aren't the right cups because you can't make a cup go out of an other cup. And the speed stacks are white and they glow in the dark and they have to be in a cool speed stack bag and they use speed stacks on the cup stacking videos on the cup stacking video bar and those videos are from youtube.com and it's really fun to cup stack!