Official WSSA Proved Equipment!
100% genuine Speed Stacks product!
Take Your Stacking To The Next Level! STACK FASTER!
Pro Series cups are endorsed and signed by former World Champion Emily Fox and used by current World Champion Steven Purugganan.
Large center hole improves air venting and reduces stacking time.
Perforated friction pad refuces sliding fumbles.
Special high impact material
Only Black color is available as shown on pictures.