These Clear Drink Cups - 12 oz are used for smoothies, yogurt, soda, and many other things. Made from high quality and strong clear PET plastic. We offer dome or flat clear plastic lids as well, sold separately. These cups are used for milkshakes, smoothies, iced teas and coffees, sodas and more. The top rim is 3.52 inches in diameter, bottom rim is 2.35 inches in diameter and it is 4.12 inches tall.