How cool! These 12 ounce color changing stadium cups will help you make a great first impression Molded from BPA free polypropylene (recycle code 5), made in the USA and dishwasher safe but not recommended for microwave use These innovative beverage holders change color when you add ice cold liquid, making them ideal giveaways for fundraising events or company picnics Molded with 30% post-industrial "home" recycled material