Think sport stacking is cool already? You"ve got to see this * Now you can stack anywhere any time¿even after dark, or after lights out * Comes with 12 glow in the dark Speed Stacks Competition Cups, the exclusive Stack Mat with glow in the dark details * Wow! These super bright cups glow for over an hour * Only Speed Stacks is the official equipment of the World Sport Stacking Association * All new light up timer, two glow in the dark wrist bands, sports carry bag and full color instructions