This is a sturdy, reusable, BPA-free polypropylene cup that changes color when ice-cold beverages are added. It is made in the USA, meets FDA requirements, and hand washing is recommended. It is available in various frosted colors that change to blue, orange, red, green, purple, or pink, with a closeout color of frost yellow. Optional natural-colored lids and straws are available, shipping separately and unassembled.