Have you seen those insane speed cup stacking videos online if you haven39t we recommend you check them out it39s ok we39ll wait you39re back impressive isn39t it we39ve got our own set of professional stacking cups here made from a strong plastic that won39t crumple but is light enough for speedy stacking attempts how fast can you collapse a pyramid of cups and then rebuild it it39s the ultimate personal speed test and great for improving hand eye coordination