Acrylic Drinkware PRISM Drinkware: From rainbow reflections to crystal clear clarity, Merritt’s Prism drinkware is our premiere acrylic line. Our tumblers are crafted from state of the art injection mold technology and give the appearance of drinking out of glass without the safety concern. The clear Prism collections are polished to look like fine cut crystal, while the colored designs add style to any table. Our best-selling rainbow tumblers radiate like a kaleidoscope of color. Every design is a work of art and a great conversation piece.