32oz and 40oz Dual Hydro Tumblers Electric Sling

What is spell Tumbler is painted all black and then many different colors are dropped on the cup. I then use a white sling method to swirl all over the cup and make the colors pop.

and then many different colors are dropped on the cup. I then use a white sling method to swirl all over the cup and make the colors pop.

I can do this design on any cup, this is on a 40 ounce Hydro. The hydros keep ice for 24 hours and come in a variety of sizes; 18oz, 25oz, 32oz and 40oz