Cool Change Color Changing Insulated Tumbler Set with Lid and Straw, 16 oz This set includes 4 plastic insulated tumblers with a lid and straw Simply add your favorite cold beverage and watch as the tumbler magically changes colors before your eyes The 16 ounce plastic tumblers are reusable and durable for multiple uses Cool Change products are the perfect party favor, birthday gift or and everyday kitchen item for the kids Cool Change products are No. 5 recyclable, BPA free and FDA approved