How cool! These 12 ounce color changing stadium cups just may help you make a great first impression. Molded from polypropylene (recycle code 5) and BPA free, these vivid logo backdrops are union made in the USA and dishwasher safe. These innovative beverage holders change color when you add ice cold liquid,making them ideal giveaways for fundraising events or company picnics. Measures 3 1/8"D x 4 1/8"H and not recommended for microwave use.