You choose the stack. Upstack your pattern and then flip a bottle until you get one to land. Then, downstack the cups.
Can be completed with or without the timer. For the Cycle, flip the bottle between each upstack and downstack.
Speed Stacks, Inc.
15550 Arfsten Rd
Larkspur, CO 80118
Phone: 877-GOT-CUPS (877-468-2877) or 303-663-8083