Speed Stacks Ultimate Stack Pack

Join the cup stacking craze with Speed Stacks! These specially designed cups are built for speed and are the only official cups of theWorld Speed Stacking Association.Build them fast on the pro mat, and then take them down! The built-in timer records your best score down to the thousandth of a second. The quick release stem makes traveling with your set a cinch. Practice your stack, then take on your friends! How fast can you attack the stack.