They say change is good--so this 12 oz. Color-Changing Cup with Straw and Lid is a GREAT customizable item for your school. Use these Color-Changing Cups in a variety of ways: fundraisers, Prom favors, Senior Party giveaways, school carnivals, student awards, concession stands, and more. Made of durable plastic, this set includes a 12 oz. cup (4 1/4" high x 3 1/8" diameter), frosted lid, and 9" long blank straw. Fill it with an ice cold liquid and watch both the cup AND straw change color! Your choice of a one-color imprint will be silk-screened on one side of the cup. NOTE: The Color-Changing Cup, is BPA free, made in the USA, and is top shelf dishwasher safe.