Speed Stacks Custom Combo Set - 12 Purple Stacking Cups with Pro Timer, Quick Release Stem, Gen3 Mat & Stacker Backpack | Official Competition Grade Cup Stacking Kit for Kids & Adults | Perfect for School PE, Family Game Night & Speed Stacking Tournaments

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.