Stacking Cups

Sport stacking can only be done with specially designed cups, made to prevent sticking to one another. Made of durable plastic, the cups have three holes in the bottom to allow air to pass through quickly when stacking the cups together, and are designed with eight ribs reinforcing a ledge inside to keep the cups separate when nested, so they can be quickly separated from each other when stacking. The official company for WSSA-approved cups is Speed Stack.

The WSSA only allows Speed Stacks to be used in competitions.

Special training cups called "Super Stacks" are also available. These heavier cups are made of metal and are to be used directly before competitions. The added weight is supposed to make the regular cups feel lighter, allowing the stacker to stack faster in competition.

There are also Mini Speed Stacks which are an inch tall, for a more challenging stack and for when full size cups won't fit in a given practice space.