Official Sport Stacking.

Speed Stacks Official Sport Stacking is one of the most popular speed stacking sets on the market, offering a great way for children to have fun while enhancing hand-eye coordination and improving focus. This set includes three different colored cups, a timer, and two mats for practicing, as well as instructions to get you started. The timer is easy to use and records your best times so you can track your progress. With the Speed Stacks Official Sport Stacking set, you can learn to stack faster while having a blast at the same time!