Speed Stacks Custom Combo Set - 12 Green Glow in The Dark 4" Stacking Cups with Cup Keeper, Carry Bag, Pro Timer & Gen3 Mat | Includes 6 Snap Tops + Free Bonus Active Energy Necklace ($49 Value) | Perfect for Speed Stacking Competitions, Family Game Nights & STEM Learning Activities

Sport Stacking with Speed Stacks is one of the fastest growing new sports in the country. Stackers up stack and down stack 12 specially designed cups in specific patterns using the patented StackMat to measure and record their best times. Speed Stacks are the only products approved for use in the WSSA sanctioned events and each cup carries the official WSSA seal of approval.