Zak Designs Disco Clear 22-Ounce Beverage/Cooler, Set of 4 Set of 4 Disco Clear 22-ounce beverage coolers by Zak Designs Made of strong, styrene copolymer; ideal for outdoor use Square cuts catch light and intensify colors within Mix and match Disco colors and sizes to create a custom look Dishwasher-safe in top rack; not suitable for microwave use