The Speed Stacks StackPack offers the only official equipment for the new competitive sport, sport stacking. Already included as part of the physical education programs in nearly eleven thousand schools, sport stacking is a fun, addictive activity that challenges competitors to up-stack and down-stack twelve specially designed cups at faster than light speeds. The Speed Stacks StackPack includes everything needed to become a sport stacking pro, such as twelve specially designed cups, one Sport Carrying Bag, an instructional DVD and one Stack Mat that offers an optimum stacking surface with an electronic precision timer. Ages 4 and up.